I'm new at gardening, but when I went into my local farm and garden shop, they recommended that I try cottonsead meal and dry molasses, just put about a cup or so near the roots, and I saw a huge difference...its a somewhat organic method, so its not immediate, flowers began popping up about 2 weeks after application

Anna,

Everyone has their own idea about fertilizing. Some go completely organic, and some think there's no problem with chemical mixes. I personally try to improve the soil as much as I can with compost and manure, but have no problem giving them a few shots of Miracle-Gro tomato fertilizer if I think they need it.

Anyway, of the options you've given, I'd initially give them a shot of the 10-52-10 diluted in water to half-strength a few times. The middle number is phosphorus, which is important with new seedlings to encourage them develop strong roots. After a few weeks I'd switch to the 20-20-20, similarly diluted to half strength. Be careful not to give them too much of that one, because the high nitrogen number (the first one) can make your tomato plants produce lots of green leaves, but few fruit. If that appears to be happening, I'd cut them off completely to encourage fruit production.

Good luck!

Mike