Which iphone is better bet for me?

I already have two android phones: samsung Note 2 and galaxy S2.thinking of getting iphone but definitely not the iphone 5 due to its high price( as I already have two high end phones). Was thinking between 4 and 4S. 4S is bit costlier. So i have my mind on iphone 4. I play lots of games on phones and wanted to know if iphone 4 will be run smoothly in all the games or not, specially simulator games. P. S I Know iphone has A4 and ihpone 4S has A5 processors are there in these two iphones.

Look bro i4 is a very good device if you just want an iphone but ios7 kinda uined the i4 according to me
you see i4 is a single core phone and ios7 is kinda heavy on i4 so i have seen i4 lagging on ios7 and many visual features are not available for i4

if you can keep your phone till ios6 only (which you can't because itunes my not support your ios6 after few months ) then go for i4

but i have seen ios7 running on i4s and its very much smooth just like other ios… I4s got a dual core core which very much helps it run the ios… So if possible don't go for i4 now plan to get a i4s.