You ask, what is best wallet for altcoin? I was remember when I am new here in bitcoin I ask my friend what is the advisable altcoin wallet and he answered one of the trusted altcoin wallet is myetherwallet. In that point for me the best wallet  for altcoin myetherwallet its because myetherwallet is very easy to use, to stored eth token and the safe  altcoin wallet because you have the private key to unlock your wallet.