IPhone or Samsung Galaxy on Straight Talk?

I really wanna get a smartphone for my birthday this summer, and I'm trying to decide if I want to get either the iPhone 4S (the 5's screen is too long for me) or the Samsung Galaxy S III on Straight Talk. I'm currently on Straight Talk and I'm loving it. For those of you currently using either of those, which do you think I should get? I don't really wanna go to AT&T or Verizon and get a Single Plan, since that's just too expensive for me.

Samsung Galaxy III

If they still offer the 4s when you are ready, get one.

If you can't get your hand on iPhone 5 don't bother trying to get your hands on a galaxy s3. S3 is only meant to be loved by the beautiful big screen it has.

IPhone on any network is better than anything Samsung… BY FAR