Which model of iPhone 4s 16GB better, A1387 or A1431?

I'm planning to buy iphone 4s 16GB, but I can't decide between these two models. A1387 (international version) and A1431 (China only GSM) models.Both of them are original certified models of Apple. But in terms of quality I'm not sure which is better. Specs for both are identical, I will be using it on GSM/WCDMA networks( 2G and 3G), not CDMA.So your advice and opinions are appreciated.

Every model of iphone sucks. Don't buy it, please, it's only for stupid idiots.

A1431

Jere. You must be a poor loser to not be able to pay for an iphone so you talk trash. Sucks to be you buddy