Hello and welcome to iMore. I think I also belong to the country in which you're living. (From Islamabad, PK)
I have used Lumia 920, Moto x and Moto g also. But tbh, nothing beats an iPhone and iPhone 4s is still really hot. Its the best deal in the best price with buttery smooth performance. I currently switched to Factory unlocked iPhone 5 yesterday and my previous device was also iPhone 4S.
I think that you should get the 4S. It has a really good built quality and everything seems perfect. Or else go for the iPhone 5 if your budget allows you to.

Cheers!