You are okay for wanting wait. Galaxy has become the defacto standard for Android. This is a problem. I know I am guilty of it, I have never had an android phone that was not a Samsung.
Instinct--> moment --> Epic --> Epic 4G Touch --> Galaxy SIII.
I realized about 5 months ago that there where issues with radios in these phones. I had equated weak radios to Android.
I was in Las Vegas, watching the Fountains at the Bellagio. I saw plenty of S3's in the air trying to get a signal. I saw other people using Iphones and EVO 4G LTE's working just fine. I started asking if these people had Sprint, like I do.
Some did, some did not. The iPhone and Evo's on Srpint, functioned just fine. The Galaxys, where all with out a signal.
I got home, and was leaving work. My friend Nicky was on her iPhone 5 from Sprint, talking to her daughter. I was looking at AC forums. I shut my screen down until I got out of the elevator. Nicky, plus all of the iPhone users all said their phones work just fine in the elevator.
Going to work the next day, I asked all 8 of the S3 users, from all the carriers, how did thier phones work in elevators. All 8, same thing, no signal. No signal in our local uber Grocery store. No signal in our basement. I work at a large hospital.
In my household, there are 3 S3's and 2 S2's. All have the same exact issues with the radio. My wife can't even get a good wifi signal at school, let alone make a phone call. Her lab partner uses an iPhone on Sprint, and she has to use her phone for searches.
People on AC will pounce on you for saying something wrong about the S3. I am one of those ex Samsung Fanboys. I made that same mistake.
The radios on these phones are weak. I will not be getting the S4 until I can confirm that the radio is not the same as the weak radio the others use. I will never use an Apple device, I will go to HTC, Moto, or ANYONE else who makes a good radio.
You hang tight, see what the others have to offer.