in addition to DRK, I have my eye on NXT. it looks very good and undervalued.
NXT is the best thing on the market besides DRK
Check out http://nxt.org only about 3 cents each with decentralized asset exchange (distributed MtGox).
If NXT or some other professional entity provides a decentralized alt coin exchange then I would invest heavily at the first chance.
NXT is working on a decentralized alt coin exchange called instantDEX and you can buy shares in it on the NXT decentralized exchange. Asset name is instantDEX.
in short... create nxt account with very strong password(40 chars+), send utopian a pm with your nxt account number saying you want your stake sent to the nxt AE.
if you dont wish to use nxt you may use xcp/wait until launch of nem!
read the instructions first though in the links above so nothing goes wrong.