I've not seen Texas yet (either version) so I can't comment on any similarities or differences between the two.
But I did find it to be one of the better gorror movies in the last few years. Waaay better than House of a 1000 Corpses IMO.
I was impressed by the SFX of Wrong Turn. Little to no CGI, and all on a $12Mil budget.
I'll probably be picking it up at BB tomorrow...