I really like the Jiffy pucks for seed starting. I used them exclusively for a few years. The only reason I don't use them as much is because they become expensive when you start as many seeds as I do. Also, they tend to dry out quickly and you can lose a batch of seedlings real fast if you aren't paying attention. They really do work great, though, as long as you keep an eye on them!
RE: Follow up on the Jiffy Starter pots from 8 days ago Gardening