Appreciate the info, Dave. We're building in Sidney, just north of Augusta. Keeping the floor levels even is the only thing that draws us away from Ditra - it sounds like a great product, but we plan to have wood floors also, and they would have to use molding of some type to compensate where the wood and tile meet, as the Ditra's pretty thin. Anyway, thanks again for your help; I think we'll ultimately go with either plywood or the Ditra. Take care.