Well i think it is important to do your own research here, but i think by far the strongest performers will be the Platform and privacy coins.

Anyways here i my list

MONERO
Z CASH
EOS
DASH
NEO
NEM

Also note that altcoins have fallen of a cliff recently so you could get some good bargains right now, but it looks like this things are just going to get worse for alts from here.

Perhaps it would be wiser to stick to BTC