Toribash
Hattersin, due to his ability to amaze me on a consistent basis with his unorthodox movements and inability to predict.

And Jaker because of his capability to replicate real life in such a marvelous way.

I love Jaker, Swexx, Largekilla, Internet and Notnoob (Last two probably biased as a result of being clan mates, but still great, inspiring replay makers.)

Although NutHug and Isolations are not my favorites, they have done a helluva lot for the replay making community this go around in the SP Cup.
DAMN.
Theres quite a few that i like for their various virtues but Notnoob is my favorite, he just plays to his own rythm and does his own thing that just always happens to look damn good.
Well I don't know how's the replay making community these days but I bet there are a lot of epic replay makers by now. A year ago I remember seeing a lot of guys with great potential.

As for favorite replay maker depends on what you like and what's your perception of that person/player and when you joined.
So with with all that subjectivity in I have to say juhizz, very nice chill guy, with cool original replays.
Nirs, I can't say I like him but his spinning punch replay was amazing the first time I saw it.
Also swexx, when I started playing the guy was very good(he still is) and one of his parkour replays helped me understand some moves that I didn't knew at the time.
As for the new ones that I know, I give it to pusga, I rememember watching some replays from the guy and I was like "wtf is he doing" and before I could say anything uke was already exploding all over the place. Some kind of unorthodox originality.

I'm sure there are more but these are the ones that came to mind
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Good day Dr. Freud