Hmm well the international is the most expensive. It's straight from the factory of Samsung so you get no extra bloatware like you do on the ATT/TMobile/Sprint/Verizon versions. It is an 8 core, but there's also no LTE on it in the US. If you plan on using Straight Talk, the international is the best way to go even though it's expensive. Probably like $650-$750 for a brand new one.
If you want to use LTE on it, definitely get a T-Mobile or AT&T Model, or Verizon if it's out. They are the same phone but with different bloatware added by the carrier. I'm using an ATT phone on ATT Pre-paid and it's a great phone.
---------- Post added at 08:14 PM ---------- Previous post was at 08:14 PM ----------
Another LTE Speed Test