I currently use a n95-3 with At&t with n800. Works brilliantly. You are out of luck with Tmobile and 3g if using nokia phone. I would definately recommend the n95-3 and if you use with At&t, you will get 3g but not while travelling in the UK. Compared to your 750, the n75 and n95 are much smaller with the n95 being smaller than the n75 but thicker. I have found there is not much that my n95 can't do. I just downloded an application for the n95 that creates a wifi hotspot and shares out the 3g data link. Now, I don't even have to use bluetooth and can have multiple devices using the 3g connection if I want. If you have any questions about the n95, shoot me an email.

phil