Have you played Houdini?
I've played it a lot at this point.
The only reason I keep playing is to try and take down the GC. The game looks good, but that's about all I like about it.
The play before you buy mantra is always awesome advice, but I think it's especially important here. Houdini is just another new game at this point to me. I think it's a good first effort from the company, but I don't think it's fun to play.
I think MMR is the far superior game.