i have prime coin, and think it is innovative, and was the only coin I have mined.
Diversification is the biggest draw, and that Sunny King was the DEV
a lot of people talk about diversify now between technology. So:
-> first new innovation: Namecoin
-> first scrypt coin: litecoin
-> first POS coin: PPC
-> first scrypt+pos: novacoin
-> first new POW (the most importatnt if something go wrong with SHA256): Primecoin
so this coin should go up the most i think. primecoin lost the most of all these becouse of bad short-term news. So i think that it could skyrocketing in next days/weeks