I have a few favorite seed starting methods. Believe it or not, the peat pellets (in the mini, dome-covered greenhouses) work great for me for seed starting. For tomatoes, I do not use a heating pad, but for peppers, I will. I always make sure, with the peat pellets, that once the seed has sprouted & straightened up pretty well for a few days, that I pot it up to a 16 oz cup. The peat pellets are excellent only for seed starting, IMO. Once the seedling starts to grow a bit, they must be potted up & the netting 1110000% has to be removed (don't make me find the horror story pics of this not happening...lol). This method has always given me a 90% or better germination rate!
I also like to start some herbs and other various non maters/pepeprs in peat pots or squares, but they must be kept extremely moist, as those things soak up more water than a sponge! =) Both this method & the peat pellet method, I leave the items in complete darkness until seeds germinate.
One new thing I'm trying this year is one of the "Germination Stations." I have mixed opinions on it so far, probably because I made the mistake of filling the little holes with Jiffy seed starting mix, which is about impossible to get to soak up water. I think, with the proper seed starting mix, these can be great, as they come with a heating pad that is kept underneath the greenhouse.
Anyways, figured I'd put in my two cents about this topic. =)