NXT
NEM
MAYBE ripple and maybe ethereum. I hope bitcoin continues to do well (at least for the near term), obviously.
Most of the rest I really don't see offering anything really that innovative. I think dogecoin is funny and I don't mind it sticking around just to bring new people into cryptos that otherwise wouldn't have checked them out. Don't really like these country coins like AUR, so I don't care if they crash and burn.