Seeking Advice: Carrier Switch? Hardware???

[jhinze]

Due to a recent change in martial status, I have to break my phone and number off of the sprint contract which is under her name.

I currently have a TP2 and have been with sprint almost 10 years. Not too many complaints, it has served me well. I have the simply everything plan.

When I break my phone off, I'll have the opportunity to stay with sprint, or choose another carrier such as T-Mobile or AT&T. I am quite interested in both the HD2 from t-mobile and the Evo 4G comming to sprint... but am not a big fan of Android. I love my WM phone and developing apps is much easier for me, am more familar with the OS, API, and tools... have not yet tried to do anything developmental wise with android.

So, I'd like to her opinions both on the networks/carriers in regards to reliability, stability, call drops, etc. I'd also like opinions as to if the EVO 4G is that MUCH better than the specs on the HD2, have not been able to find a side by side spec comparison yet.

One other factor, I tether my phone quite often... and drives me nuts that with sprint I can't have a call come in and keep my data connection... but I understand that the 4G network will have this capability.

Thanks in advance for any responses.