You're a network specialist so think on yourself is 3G connection is going to get you speeds any faster than 50kb/s in most covered areas. I'm currently on a 3G network myself in Finland (provider Sonera) and most parts are nicely covered.
The point is 3G networks are meant for businessmen who are in the middle of a fucking forest and want to make a quick payment. It isn't meant directly for everyday hi-speed hi-bandwidth usage cause that's just no possible. Having to transfer few hundreds of MBs of files in a day, it definitely isn't meant for you. It doesn't provide speed or stability.
Anyways I mentioned my 3G connection. I've got adapters from 2 providers currently, which are:
- Sonera (ZTE stick, ~100kb/s)
- DNA (~50kb/s)