It all depends on you
if your only using ½ or less of your min , you might thing about a prepaid play next time around
There are some Co. the offer 10 cents a min..
BUT check there covers area ..
And under stand that with most of the Co. there is no ( free phone )
Also most prepaid Co. do not offer free cell phone to cell phone calling , thus if your using at lot of Free cell phone to cell phone, calling a prepaid might cost you more.
You will pay about the same for a 700 min with AT&T / Sprint - Nextel ,, as your paying with VERIZON
NOW if your over 65 ,, you can get a lesser plan call 800 - 922 - 0204