a very good and high quality keyboard-mouse combination

The Logitech diNovo Laser solves from "optical" variant and brings not only an improved mouse and another receiver not much new.
Do they not, after all have to improve where there is nothing to improve nothing. The components again in detail:
Keyboard:
Something better is never met me, excellent build quality, no rattling, no wobbling, Top Design.
The flat keys have a very pleasant pressure point and are a delight for all those who are tired in the "mountains" of traditional bulky buttons navigate. The keyboard is "stayed the same" compared to its predecessor (diNovo Media Desktop 2.0) essentially. In the previous, I had accidentally once the keyboard with a full glass of water
flooded, the water actually ran out everywhere, on all the cracks and corners. After drying, the ordinary keyboard work again properly until today.
MediaPad:
Very convenient: you can set aside when necessary, thus creating more space quickly, without having to completely renounce a NumPad. Also unchanged from the predecessor. With quality and processing the same applies as for the keyboard. Small drawback: I had several times ordered from Amazon and going to leave (everything without problems, great service!) Until I finally stopped a product in your hands, in which the Mediapad not wobbled the product. With such a high quality product, the frequency of this error was disappointing.
Mouse:
Unique improvement. In particular, the ergonomics is fantastic after a day you do not want to go back to MX of its predecessor. While the mouse does not use AA batteries, but the built-in battery is so powerful that it comes "at the last drop", ie with already red alert level, loose nor a whole day to make ends meet themselves. Overall, the battery lasts for frequent use about 1 to 1.5 weeks, so you'll always be in the predicament that the juice runs out. The mouse wheel can now also horizontal scrolling, but feels it is no longer quite as "fixed" like the MX mouse of its predecessor. For gaming: I have learned that all games can perfectly cope with this mouse, even during fast movements in first person shooters there were no problems, all movements have been implemented correctly and without delay. When people have problems here, is that either are in the wrong Mousepad (as pad I use the Raptor Gaming P1), or due to problems with the receiver (see "Receiver").
Receiver:
Here's the only criticism and unfortunately, a "deterioration" compared to its predecessor. It's not like this in the charging station integrated, but a small USB stick. One hears of reception problems, which makes the mouse react delayed and should also be responsible for the "multi-touch" (eg press once key "h" and it will appear several "h" s). For me, I realize none of these problems. Should it occur, is quickly created with a USB extension cable from Remedy, the bringing the receiver closer to the mouse. That should such an expensive product but have no need. With me are just over 1 m distance between mouse and receiver since klappts fine.
Software / driver
A little complicated and lengthy to install, also too big fall (by used space wise). Compared to its predecessor provided with an automatic update function. The annoying aufpoppende battery warning and can not be shut down, unfortunately. Slightly slimmer the whole could be, therefore, is clearly room for improvement here.
Conclusion:
Despite little weaknesses an excellent product of the highest quality that is convincing in all material respects.
In terms of receivers and software, however, further improvements should be sought by Logitech.
From my side, a strong buy recommendation!