I've been using my trusty BB 9700 with Tmobile since the day it came out. Never a single problem with this phone. I'm still on the original one! I recently switched to Verizon and have been using a temporary LG phone for the past week with no data plan and with a touch screen. Can't wait till my new phone gets delivered tomorrow. FedEx says by 3pm!
I hope the 9930 is as stable and reliable as my 9700!