For those who have had their S3 for a while are you happy with it? Does it drop data often or is that not a problem? Does Google Maps work often, or does it have issues 50% of the time? Do you like the camera?
I started with a couple of different BBs, came to Android via the Thunderbolt and transitioned to the S3 one week after it came out on VZW. The S3 has been great, so I guess you'd say I'm happy with it. I was never unhappy with the Thunderbolt. I just realized what it was/when it was and adapted to a few things with it. On the other hand the S3 has required no adaption. It just works.
As for the drop data, what's that? I don't have a problem with that issue. I do downgrade to 3G once in a while when I'm out and about, but that is really a factor of my locale in the mountains. I dropped to 3G with my Thunderbolt, too.
Google Maps: It always works for me - 100% of the time. I really didn't know that it didn't work for some poeple on their other phones. I do use it often and have even used it in place of my navigation system built into the car. It works better than the one from the car maufacturer.
Camera: Yeah, it's fine - certainly better than the one on the Thunderbolt. However, I'm not one to use the camera phone that much. It only gets occasional use from me. I prefer to use my DSLR for good photographs.
I will just add that S-Voice that comes on the S3 is absolutely, totally and without question one of the worst applications I've ever used. It's terrible. However, if you root and replace S-Voice with Google Now from JB, the phone will be perfect. I'm still running ICS, not JB, but Google Now works perfect on my S3. Hands-down it's really accurate.
Good luck on your decision.