I'm looking into buying a ZTR with a 36" to 40" deck. Looking to cut a few residences, but not doing this full time. I have a friend who has a 40" Gravely and loves it. I asked him about the EXmark, and he said that the Exmark was too heavy and will make ruts. What is the opinions of others on this site. Please give me the "skinny" on these two mowers.