[Thunderbolt Q&A, Help & Troubleshooting] bkiminfinity:
i had debated for a while before the atrix came out on whether or not to get the tbolt or the atrix. i was actually on at&t at the time but decided to switch to verizon (got a droid x off of craigslist so i still have an upgrade available) and wait for the tbolt. i decided against the atrix primarily when i read about at&t disabling HSPUA on "4g" devices like the atrix and the inspire. i thought it was ludacrious that first of all at&t's 4G which is actually hspa+ (or 3.5G) wasn't reporting that much faster speeds than 3G and furthermore was actually limited by the company from reaching top speeds. it's sad that they are finally making efforts after being slammed by the better business bureau on this charade.

so if you are looking for a faster network like you had said it would be a good move to switch to verizon, at&t could improve their "4G" but it still wouldn't be as good as verizon's lte, IMO.

other factors than network, i'd stick with the atrix if you purchased those docks since it is the only phone that works with them (however, i am assuming that docks aren't a factor since you are keeping the option to return the phone).

i do think that the screen would be better on the atrix but that doesn't mean that the tbolt has some crappy screen, it'll still be very vibrant and pleasing. the screen wasn't a huge factor for me as much as specs and usability. specs are stronger with the dual-core atrix, but i've read a bunch that dual-core for the most part isn't necessary on smartphones yet and there are very few games/apps that actually utilize both cores. i believe that the dual-core power on the atrix is only there to support the docks designed for it, and without the docks it's not that big a deal.

i am currently on a droid x with verizon and have it rooted and customized how i like, and since roms like cyanogen are a plus for you it seems that you would appreciate the tbolt's rootability and customization more than the atrix's locked down bootloader.

tbolt has a better camera (8MP vs. atrix's 5MP) so +1 for that. they both have front-facing cameras.

tbolt has kickstand, some may see it as a gimmick but there are times i've watched things on my droid x and thought "man, a kickstand would be super-useful right now"

another point for verizon's network is that 4g/lte is starting with unlimited data plans, while i'm pretty sure at&t kept the tiered caps from 3g.

atrix has that fingerprint scanner which is only as useful as you want it to be. so meh.

as a previous poster mentioned the tbolt battery is an unknown factor since it is the first phone on LTE, and atrix comes with that monster battery which i think is somewhat limited by having to run dual-cores.

size was a factor for me too as i wasn't sure that i wanted a huge device in my pocket all the time but having had the droid x for a few weeks and its 4.3 inch screen, it's not so bad and i got used to it pretty easily (although i did have a blackberry bold 9000 before which was slightly bulky so maybe i'm not the best judge on size).

tbolt comes with 32GB sd card which is nice.

so there you have it, reasons why both phones can be good/bad but i think the tbolt wins strong points for being unlimited on verizon LTE, which is supposed to have awesome speeds.