1. Samsung needs to bring relatively long to Android in the latest version out. Thus, they are waiting for upgrades longer as with other manufacturers (at least my experience), Apple is there something more to "zack" (who eventually completely different resources)
2. weight - you may be surprised, but the smartphone is too easy. The value do I as out of the question, the workmanship is very good - albeit plastic, but simply too delicate for my strong fingers
A plus would be the extent in relation to the "thin" on your smartphone. It disappears in your pocket and bulges from this in any way, you hardly notice that one has a cell phone in his pocket until it vibrates then :-).
My personal feelings about upgrading and weight may not influence the evaluation, therefore all the stars!