Well, I went ahead and decided to get the Galaxy SIII. The design of the HTC phone was better, but the Galaxy seems like it will last a lot longer, considering that it's battery is replaceable and it has an extra GB of RAM.
The phone works great, and I haven't had any problems with it thus far. Thanks to everyone who gave their advice!
I'm looking to get a new smartphone with Sprint. I'm looking at two phones; the Samsung Galaxy SIII and HTC 4G LTE. I have relatives that own the Galaxy, and they say it's a good phone, but the HTC phone is looking just as good. I'm getting it in less than a week, and any advice/experiences involving these phones would be appreciated!