For OS: I already have, I still used the 820'er, eager longing for the cyan Update (= update of WP 8.0 to 8.1) serviced. A feature of 8.1 is yes, that is now three tiles next to each other gets to the screen instead of two tiles in Normal format. With a 5-inch screen that is naturally chic, than the Lumia 820. If the 4.3'er now would join the app provider and would make their Tiles consistently transparent, or install a switch, with the switch to the tiles on transparent may bout perfectly.
In personal and professional use has 930'er numerous advantages:
Camera: Megapixel is not everything, but what makes this camera very impressive. In private use with the Nokia Apps for photographing (Nokia Camera Beta) and image editing (Lumia Creative Studio) and professional use photographed with the Microsoft App "Office Lens" (Whiteboard from an acute angle and the app will flare out, directs the picture would look like as if you had been standing in front of it and stores in One Note, Word or .ppt.
Office applications: By default, all aboard (Word, PPT, Excel, One Note). Nett I find for example the app Nokia Beta Conference, which is a nice addition to the calendar, since you can store data de dial telephone conferences here. Cisco WebEx works fine. I all applications is the keyboard (with wiper function!) Fantastic and she learns quickly (Word and context recognition). Speech recognition is a very good level. Can you complete the whole nor Lync.
Everything is on the App Store important for travel available (Lufthansa, DB, HRS, Booking.com, ...). Tickets can be stored in the wallet. For Passbook files there are converter (which you realize not when saving!), For example, "Passbook Converter". About the navigation softaware HERE has already been much written. Useful addition is HERE Transit for public transport (who has the app each regional transport network installed).
Entertainment: games I do not use. Music (MP3 player) is very good, esp. The adaptation of the sound experience. Nokia Mix Radio I like to use in the wireless, for listening to music. FM radio is also on board. Spotify and Co. I have not tried yet. Videos are a delight, even on the small screen thanks to the very good resolution.
Generall about Apps: Who still doubts itself should be easy times look in the Windows Store if it really is something missing. My feeling is it is little. Unfortunately, here the Telekom does eg produced by the fact that it treats Windows Phone neglected. Home Talk is for example only at the end of 2014th
Finally something to the screen, the battery, the processor, the charging function and (oh yes) for calling feature:
Screen: Razor sharp with rich colors. Many options. Robust Gorilla glass, of which I have the impression that it is dirty less quickly.
Battery: Powerful. Keeps me usually almost 2 days calls with daily ca.einer hour, mail and Internet.
Prozesssor: damn fast!
Charging function: Wireless Charging default. I personally find great!
Telephony: Very good call quality.
What's missing: The view feature that came with the Black-update for my 820'er.
