Previously, on prepaid: the options....
I talked about some of the independant prepaid companies, Virgin Mobile and Tracfone. This time around I will mention each of the Big 3 and their prepaid options.

Verizon:
InPulse - the PAYG plan offers Unlimited IN Network calling, Unlimited Night Calling, and 10 cents/min to everyone else; you get these perks at the cost of a 99 cent per day access charge.
EasyPay - Verizon's PYP plan offers two different rates, 350 minutes for $50 and 700 for $70; each rate offers Unlimited IN calling and 3000 nights/weekend minutes.

AT&T GoPhone:
PAYG - two choices. Similar to Verizon, you can get Unlimited calling within the network and 10 cents/min to everyone else at a cost of $1 daily access charge. You only get charged the dollar on those days you use the phone. Or, you can opt for a flat rate of 25 cents/min, no extra perks. The PAYG plans recently added text packages, and also offers rollover balance (when you refill your account, your previous balance will carry over with the refill).

PYP - AT&T offers four different packages, the perks increasing along with the price. 29.99/month gets you 200 minutes total; 39.99/month gives 300 minutes anytime and 1000 nights/weekends; 49.99/month delivers 400 minutes anytime and unlimited nights/weekends; and finally, 69.99/month promises 650 minutes anytime, unlimited nights/weekends, and unlimited mobile to mobile. Each package offers rollover. If you run out of minutes, you can add more before the end of the month.

T-Mobile:
It looks like T-Mo offers PAYG. The perks come with the Gold Rewards; once you buy a $100 refill card you become a Gold Rewards customer, where no matter what kind of refill card you get from then on you receive 15% more minutes and your minutes won't expire for a year. No text packages, but they cost 10 cents to send and 5 cents to receive; sidekick packages are also available for a dollar a day.

If you have family and/or friends who use Verizon or AT&T, it's probably best to get a PAYG plan with those services simply because they offer unlimited mobile to mobile, which can help save you a lot of money on extra minutes.