Litecoin, Next, Bytecoin - Go for alt coins that are innovative and original. Steer clear of clones, forks and 'we'll do this great thing sometime in the future' shitcoins like DOGE, Monero and Maidsafe.
Bytecoin is the first cryptonote coin and is being developed actively. However, it is tainted by 82% premine, otherwise it is another bitcoin.