Remember, I am a sculptor, so I am a bit biased.
Hammerhands: detailed, true to the art, though it's scaled a little small. I love this mini.
Centurion Omni: its my own, and probably some of my best work, so yeah...
Raptor II: just in general a cool mini.
Mad Cat Mk II 4: I still haven't painted mine that doesn't mean I don't love it. Just an awesome mini in general.
Gosh, I can't think of a fifth, I'll edit when I think of something...