For me, considering both stability and potential.
1. Ethereum
2. Bitcoin
3. Factom
4. Ripple
5. Antshares
6. Waves
7. Monero
8. Shift
9. Litecoin
10. Golem

Honorable mention to MaidSafeCoin, but I didn't list it because it is more of a 5-10 year hold, not something that will grow crazy amounts in 1-2 years.