I agree with everything above, especially the Swype keyboard. I got my X a couple days after release and didn't even attempt the Swype for a month or so. Once I did, though, I was hooked. It's GREAT! Wouldn't want to go back to a traditional keyboard again. The screen size and the large keyboard, especially compared to the BB Storm 2, make it a breeze to operate, even if you are using multi-touch.
Also, the Droid's large screen and multiple home screens soon become adapted to your own personal use and, with Launcher Pro Plus added to the mix ... can't beat it.
I'm on Verizon and have been very content with their service in my area. Rare for dropped calls and I get a consistent signal. I started with 2.1, upgraded to stock 2.2 and have stayed with it. With 2.1, I had major battery life issues, but with 2.2 it's much better (being careful to keep power-draining apps closed down).
I doubt you will be sorry about having the X. I haven't seen anything since its release that would even temp me away. It's amazing!!!