Just created an account here to comment in this thread. I've had a Droid X for 2 years and my plan just expired about a month ago. i was dead set on getting an S3 after i saw how Apple basically re-marketed the Iphone 4S as an Iphone 5 (sure there were some tweaks), but I've heard a lot of complaints about the GS3 (mostly build quality issues). I got the Maxx HD the day it came out and LOVE it. It's very fast compared to my old X (not a good comparison, I know), the video and screen quality are amazing, as is the overall build quality. Battery life seems very good so far, I've been on my phone all day, including downloading various apps and making a few 15-30 min calls and my battery is still at 89%.I do like the smart actions, however I wish I could turn off the LED indicator at night. I plan on getting an otterbox soon as well.
edit: it seems that Swype has been changed a bit since I last used it... It is registering my inputs much more accurately than my droid X did. Swype was one of the main reasons I didn't want to be a hipster and get an iphone.