I am currently a prepaid customer with AT. I'm also an avid forumer on their website, and I "specialize" in their prepaid offerings and services. I have had Verizon prepaid and postpaid services in the past, and I left due to the high prices and the limitability of their prepaid plans.
I used to have the $.99 daily access fee with $.20 per message. It got too expensive, but then I joined my Mom on her postpaid account. Just three months into it, it got too expensive; I then dropped my Verizon line and happily joined AT&T.
AT&T has very good priced prepaid options and plans - sort of unlike Verizon. Overall, I am happy with AT&T (prepaid), but sometimes I can't get very good coverage in the kitchen of my home... Which is kind of important, because the kitchen is where the heart is, am I right?
I do get good 3G coverage upstairs, though, which makes me want to stay.
I use an AT&T prepaid Samsung Mythic, which I love, but it recently stopped working.
I am looking to get it replaced soon. My Mom uses a Samsung Reality and gets two/three bars of 3G in our kitchen, while I get zero-two bars of EDGE. I may switch back to Verizon prepaid, under some certain conditions...
1.) Does Verizon offer SMARTPHONES on DAILY ACCESS PLANS? For instance, at AT&T, you can use ANY phone except the iPhone on a prepaid plan, and it is allowed. Can you do that with Verizon? I would like to use a Samsung Fascinate on the daily rate plan of $0.00 with $.25 per minute and $10 Unlimited Mobile-to-Mobile messaging with 250 messages for other-carriered customers.
2.) I use a plan at AT&T called the Simple Rate plan where I pay just $.10 a minute for all calls. Is Verizon's plan $.25 a minute PERIOD, or just to non-Verizon customers?
3.) If I were to switch back to Verizon prepaid, are there any activation charges? At AT&T, you can just register your AT&T prepaid SIM card, and begin using the service almost immediately with no activation fees.
4.) To add money to my AT&T prepaid account, I just simply buy $25 GoPhone cards and load them to my AT&T account. Then I add my messaging plan. Are there Verizon prepaid cards to purchase, and if so, are they easy to load onto the phone?
If I cannot use a Samsung Fascinate/other advanced device with the mentioned plan, I am staying with AT&T, despite the coverage issues in my kitchen. At least it will be affordable and "limitless"... 
A reply would be appreciated. Verizon's business depends on it. 
Thanks.