Did you make a choice? Are you happy with it? Have you had LTE signal to test?
I'm contemplating the same question as my big blue iphone went belly up. I liked the GS3 spec wise (though only slightly better IMO). But after playing with the interfaces for some time I liked the HTC EVO LTE4G UI a bit better. The specs look pretty close to me except for RAM and a few UI and personal choice things. I think I need to play with the interfaces more to see if the s3 secret shortcuts I don't know about yet win me over or start to make sense. Also only had Andriod gingerbread for 1 week so its still kind of new to me in general. Also quirks on both sides,e.g. I didn't see a "favorites" in the contacts section on the HTC. I feel like i'd be wasting time looking through recents or searching a lot. I think the UI differences really make a huge difference for me. Which would bring me to a Nexus if there was one available with more recent hardware.
Though after reading about HTC EVO LTE 4G connection problems "some" are having in these forums: LTE, WIFI, AIRRAVE with the HTC I wonder how prevalent the issue is if I want to chance it.
S3: RAM, Removable battery, S-Voice, Stay On(?), NatureX UI, slightly better camera (-Bluish Tint or is that screen?), S-AMOLED
EVO 4G LTE: Sense UI, S-LCD, (-Connection Issues??)
Nexus: Older HW. Maybe I should reconsider this?