Hi guys, I am currently deciding between iPhone 5 and SGN2. But I still have few doubts on which to get. Currently using iPhone 4S.

1) Which is more future-proof? I'm planning to use it for at least 1.5 years.
2) Does the 2GB ram of SGN2 make up for the device smoothness? Such as home screen swiping. I've tested at Samsung store and I find it a little bit sluggish. It is due to the tasks running in the background and it takes up most of the resource?

I don't mind trying Android since I used my dad's S3 before

So if out of the box will have the sluggish issue?