[Amahain]

This is a tough question - way too many good ones.

I'll say Bruno Díaz simply because I think he had a great, realistic drawing style and did several really good comics for Locofuria.

http://arqueart.deviantart.com/

Unfortunately, he passed away.

http://locofuria.deviantart.com/jour...iend-471954068

Others that I like, past and present:

Coffeeman (http://www.transfur.com/Users/Juanvaldez)
Angrboda (http://www.furaffinity.net/user/angrboda/)
Maskaa (http://www.furaffinity.net/user/maskaa)
SilverBulletProof (http://www.furaffinity.net/user/silverbulletproof/)
Lemonfont (http://www.furaffinity.net/user/lemonfont) (some great succubus TF pieces there)
Doomington (http://www.furaffinity.net/user/doomington)
Huginn (http://www.furaffinity.net/user/huginn/)
Incarna (http://www.furaffinity.net/user/incarna)
Ranzab (http://www.furaffinity.net/user/ranzab/)
Gryf (http://www.furaffinity.net/user/gryf/)

... and of course, Kari and GenYun!