The master keyer in smack no matter how old it is, is still the fastest most intuitive keyer available. The point based rotoscoping tools are not available in any other system. the renders in Smack are fast opengl databased and non destructive. Even with the new editor, the interface is still not that great for editing, Maybe for final conforming it might be for sure. Autodesk dropped the balled on the cool match mover one click 3d tracking, which they added to MAYA 2010 for free. Its not the best 3d tracker but it would have been perfect in Smoke. I'm not a colorist so i can't speak much for the difference between lustre and CCwarper, but I know for sure that a few thousand music videos and commercials have been graded in smoke. Probably more than any other system around.
I'm a hardcore adobe guy, but i always do all last minute tweaks and clean up in smoke. Lately I've been playing with IFX Piranha for mac, this is a real all in one tool for $995. Its fast real time 4k at 1/4 debayer. editing, softfx, cc, tracking, keying, scaling, re-framing..... the works. Not as powerful as smoke though. but for what most of us do. Its great.