I'm looking to upgrade my tires on my discovery and was thinking of going with mud terrains. I know the BFGoodrich's are the correct tire for an XD but I was wondering if anyone has had any experience with Pro Comp tires. They look to be about the same tread pattern as the BFG's but they have little sipes in the center treads. I've heard procomp has a pretty good reputation. I haven't looked into the price of them yet. Anyone have any info? Thanks.