So, I've the player times when MM brought for 145.- Euro.

Bought mainly because Amazon Prime Video, as the Sony S4100 with Amazon app is only compatible with stereo and my "real" player Panasonic DMP-BDP335 unfortunately not support the Prime Video.
When Sony registration with Sony Network was absolutely necessary, otherwise went no Prime Video.
The Sony I had again returned and exchanged for this Samsung.

The Samsung can do without Samsung Account.

Image quality for the price is right, the Sony was not much worse, but the Panasonic better.
Well, it's also 2xHDMI, with me important for tone AVR, which can not support 3D.
But not tested the 3D At Sony, who has even 1xHDMI.

At the sound of me not noticed negative.
Did not so much tested and compared.
> Problems with sound only via USB, see below

Remote Control:
Is ok but could be better.
The pressure on the OK / Enter button is sometimes not recognized, or it has to be pressed strongly.
Buttons are too smooth and "blind" is difficult to tell them apart, since all acts are relatively the same size and feel also the same.
The arrangement of the keys themselves is good to get to the most important keys well ran.

At Panasonic, but the operation is also relatively poor without looking and the D-pad is too low.
Sorry to say, the remote control from Sony 4100 was really good - from the surface of the keys to the arrangement.
The could also be operated without looking and without a wrong key to get.

Drive:
The reading of the disc is relatively loud, but quickly.
In the main menu of the disc, the drive can also be heard.
But when running the film is silent.
The other players also not much different.

The Layer Break brought a little pause for thought with itself, which was also heard.
When Panasonic goes a little faster, but unfortunately connected to an image disturbance - it flashes the frame from the front of the layer break on again.
Same BR disc in two.

Apps:
A huge selection of apps compared to the other players, and quite a lot "meaningful".
Navigation in SmartHub is also OK.
Unfortunately, I have found no way to change the Recommended APPs in the order.
Had the Amazon app like front. In the main menu below the order or display can not be changed.

Network:
Windows shares it can not access. Could Sony either, but the Panasonic can.
Maybe there ne APP which can do that, but it was unsuccessful on the fast.
When flying over the APPs some streaming apps I have noticed, I have to look at it myself on occasion.

What's great listening to the ability to access online releases.
For this you have obviously create a Samsung account, we can only hope that you can use not only certain cloud services there which are then also charged.

DLNA I have not looked further because aufm PC via WinMediaPlayer Server nothing reasonable is released.
Just this: a 80Mbit MPG2 file got stuck - but was probably more on WLAN, although 300Mbit.
A same file with a lower data rate ran flawlessly.

Speaking of data rate: the Sony was the current data rate of the movie appears on the OSD display of the display information (actually on all playback modes ie BR-Disk, Network, USB).
Unfortunately not on Samsung and Panasonic.

> Addendum:
Forgot to mention that the player is connected to the LAN cable in gigabit network and the PC (laptop) has Wi-Fi.
The player even has a 10 / 100Mbps connection.
USB:
Have also times my 3TB CnMemory Spaceloop 3.0 connected, of course, is with NTFS and was even recognized (unlike the Sony and Panasonic).
There is an indication how full the hard drive. When 3TB stands there in about: 1.99 of 2TB busy or something like that.

When durchtesten movies, but all ran as far as (MKV, AVI).

Navigation is, well let's say modest, huge tiles and the file name is not neat to see.
The picture with the folders scrolls also laterally.
Then is also sorted by date, if I have correctly identified.
Unfortunately, nowhere an option to change the view or sorting, or I've overlooked?
So something shown by bad, I know yes not even by old DVD players like that.

For MKV files, no DTS-HD apparently only the DTS 5.1 Core, Dolby TrueHD is output sound, I have not tested.
At the cable or receiver not liegts because BluRay movies the HD sound is played.
> Addendum:
Sound Test with "THX Calibrator Disc" on BluRayDisk play all formats.
Sound Test with m2ts files of demo World no sound of Dolby TrueHD or DD + is played, although the AVR with the correct format "HD logo" indicating it remains silent.
Sound Test with m2ts files of demo time World DTS HiRes and DTS Master Audio: DTS-HR and DTS-MA only the DTS 5.1-Core will be played and the AVR is not a "HD logo".
- Counter-check: with the same files in the Panasonic everything is playable.
- The Amazon app shows in AVR DD + with "HD logo" and the sound is fine.
The only question is whether it is time to as a firmware update.
3D MKV are not automatically recognized, that it always pops up a box where you have to adjust left / right or up / down.
But may be due to the files - test times more accurate if time and desire is there.

> Addendum:
Definitely no automatic 3D recognition in mkv format files O / U. (The Panasonic evaluates the 3D flag of)
It also pops up on anything, but you have the TOOLS button then press 3D, then get to choose with R OFF / LO / U then press down to close and subsequently to close again the TOOLS button to display the menu field.
After all, the subtitles are displayed correctly, so the Panasonic unfortunately has problems.

3D MKV with MVC: is played smoothly, but unfortunately not in 3D.
On the positive side, the display accordingly correct in 3D mode with black bars the files.
The Panasonic faces problems and pulls apart the image up and down (eggheads).

Conversion of 2D to 3D does not go in Samsung.

So now goes first.
If a question has simply left NEN comment.

By the way:
Have me on Amazon here so ordered the S4200 sometimes the successor of Sony.
Now has the same AmazonPrimeApp as Samsung.
Unfortunately, the remote control is not as good as its predecessor.
Maybe I write also something to the player.