The reason for the stuff in parentheses in the topic title is to ensure Skrelp doesn't potentially lose votes to smartasses who would vote against it on the grounds that it's technically Poison/Water instead of Water/Poison.
Anyway, Qwilfish would have to be my favorite of the bunch, though Skrelp is definitely a close second. They're all awesome, though, no question about that.
This is only slightly less pointless than "who's your favorite pure Dragon?"
Or better (ie. worse) yet: "who's your favorite Dragon/Fire?"
What I'm getting at is asking us what our favorite Pokemon is out a selection of just three evolutionary lines, where one sucks, one is NFE, one is OU, and one is a (presumably) NFE not even released yet is just...ugh.
Faust_8: Would you own slaves if you could? OW: If I lived on a farm or something, sure. But I have no need of slaves right now.