Which is the Best cheap IOS device?

Question

There have been a lot of I phones in the last few years

So, which I-Phone is cheap as well as powerful excluding the new I phone7

Answer 1

Retailers are starting to discount the latest iPhones, which were first released in September. If you haven’t yet purchased one of the newest handsets, now is the time to do so, as supply has finally caught up with demand.
Do buy: 64GB or 128GB models
Don’t buy: 16GB models (not enough storage space)
You can get:
iPhone 6 / iPhone 6 Plus
iPhone 5s easily.