If you're looking for the 2003 remake mask there's 2 masks that are just awesome:
There's the mmfx mister skinister which I don't believe is made anymore, but if you're lucky enough to find one on eBay do everything you can to get one. I was lucky enough to find one on eBay last year and its a piece I dont think I'll ever sell.
Here's a video showcasing one:
And then there's the am creations leatherface mask which you can get in latex, or silicone: