I would have said ETH and DASH but both have been pumped to a point I don't think it's a good buy or at least a very risky one (I sold DASH yesterday, ETH tonight).

I currently own the following and they have all risen in price (some significantly) since purchase.

• Monero
• Ethereum Classic
• Decred
• Litecoin

I also own WAVES, but I got in on the ICO and honestly don't really know if the project will succeed or not or if there is even a need for it. I had some extra BTC and threw a little at it and have taken some profits recently and will hodl the rest.