To answer a question in a previous comment, look at Tracfone's coverage map for your area. If the phone you want to buy, using the tip I mentioned a few posts ago, is listed on your map then you're good to go, complete with a local number. If not, you'll have to setle for a long distance number and maybe roaming or no service. Only get a Tracfone from a different zip if you knw that that particular technology on that particular carrier will work in your area.
And about Net10, yes, they only offer GSM phones. This is probably due to Cingular\T-Mobile offering Tracfone better rates than the numerous CDMA providers out there that they have contracts with. Also, Net10 promises no roamng charges, which Tracfone CDMA doesn't deliver but Tracfone GSM does. Personally, if you want Net10 rates you can get them with Tracfone phones, courtesy my airtime that I'm going to start selling soon (see the last post for my rates).
Hope this helps.