Best advice, is to read yourself, me i find the one of the real undervaluated coin is saturncoin, why?
1.-Cryptsy has the info wrong, they have that is 50 billion coin, when is really total cap of 15 billion, less than any of the others that are recommended, and there is only 5.5 billion coins minted so far, so average price for the coin should be easy 40+
2.-Faster than most of the other coins, requires only 2 confirmations, so has a potential use for real aplications for the speed, and has no errors on its wallets at all, as oposite of a lot of others where you lose coins just because the bad wallets.
3.-The community is great and work together as a team, they add resources week by week and it just keeps growing.
4.- is one of the most stable charts and the buy pressure keeps getting bigger by day, so it could go to where it bellongs sooner than we expect.
5.- as i said before, nothing better than read and inform yourself, here is a link to their forums:
http://saturncointalk.org/index.php?topic=26.0oh and i love their slogan Bling Rings !