Iphone 6s plus, better with the 2 year contract or without?

I'm trying to decide is if I should buy the iphone 6s plus with the two year contract that it comes with or just pay the 600+ dollars and buy it in full. I did the math and I would end up have paid close to the same in two years but which one is really better to choose?

That depends on your situation. IF you intend to stay in the contract for the full two years, then it really doesn't matter which way you go because you said the cost was the same. IF you don't intend to stay in the contract for the full two years, the buy it up front and avoid the contract and any early termination fees.

You get a speadsheet and work out the figures for yourself! So generally I'd buy the phone outright and then get the cheapest plan that suits my needs. So, my phone is coming up to three years old is perfectly usable and running the very latest version of Android. And my contract for 2000mins, 2GB, and unlimited texts is £7.50/month, that's less than $10 a month! That's far from the cheapest tariff around, there are prepay tariffs that are half that, but they don't fit my needs (and so paying for the extras I'd need monthy would actually make them more expensive in the long run).