The next 12 months?
1. Litecoin (LTC)This was the first scrypt coin and will obviously be around in the next 12 months.
In addition, USD account verifications begin tomorrow at Cryptsy.com. I think Litecoin is likely to see a spike in price/volume once the USD markets get into full swing. This is because investors will want to move directly into LTC to trade the LTC pairs.
2. Dogecoin (DOGE)This coin has a marketing engine that shows no signs of slowing.
I think this coin probably has a good chance of becoming number two behind bitcoin over the short term. The USD markets open soon at Cryptsy which will play directly into the hands of Dogecoin. This is because new investors exposed to the Dogecoin marketing engine will be able to move directly from USD into Dogecoin.
3. Goldcoin (GLD)Goldcoin will be celebrating her first birthday in just two days. Another 12 months will be no problem.
With the new client supporting multiple currencies, it will interesting to see how things shape up. People will not only be able to keep Bitcoin in their GLD wallet, the wallet will perform much faster than the current Bitcoin QT. I think once the code is published there will be a new-found appreciation for the talented Goldcoin lead developer.
http://altcoinpress.com/2014/04/java-client-to-put-multiple-coins-into-a-single-wallet/And again, the name Goldcoin is preferred over all other coins by newcomers. The Cryptsy USD markets will give this coin a surge by making it easier for these newcomers to move their fiat into GLD.