I currently have a phone where I buy minutes to put on it.  Recently I have found that I am using way more minutes than I thought I would need.  I am considering switching to a plan that offers unlimited minutes as I do not have to worry about counting minutes and buying more several times each month.  When I was trying to decide who has the best prepaid cell phone service I found one that was much cheaper than any of the others.  At first I was worried about the coverage, but a friend of mine has service from this company and says it is great.