which iphone to get

So over the course of a week i have had 5 subscribers ask me which iphone to get. I later began my response with a midst of questions, Factors to include, Price Condition & Exceptionable features. If i was to ask  my self which iphone to get. I wouldnt hesitate to find a good deal on a iphone 4. In some instances you can find one for as litte as $150. This is a hypothetically speaking price that would not reflect being locked into a two year contract. Which is the largest downfall of the powerhouse networks that draw you in with their contracts. Even Verizon & AT&T have to pay 15% off retail for the iphone to their customers, in contrast they make their long term profit on the contract. Now in 2012 the average cell phone bill for 1  line from verizon or at&t with a smartphone has to be at least $100 which is a joke, If your hard up you can use a At&t go phone preaid sim in any 3gs iphone unlocked or not. So when you ask yourself which iphone to get consider price both short term and longterm.  why get an iphone