Should I buy an iPhone 5 after Christmas/beginning of 2015 or will the 5S drop in price (Sim Free)?

So I'm going to buy an iPhone at the end of this year, either the 5 or 5S, probably after Christmas towards the beginning of January, and i was wondering if i should buy the Sim Free refurbished iPhone 5 from Tesco at £299 (Reviews are all positive, 5 star) or will the price of the Sim Free 5S drop after Christmas due to the 6 and 6+? (Don't think i will go for a 5C not too keen on them tbh!)

I think you should buy a Nokia 3310. It's a classic for a reason and far superior to any phone on the market today.

- Its batteries lasts a lifetime.
- You can kill people with it. Just put it in a sock and start swining.
- It has "Snake".

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