Just bought a new X739 to replace my X 534. Just waiting on the 54" deck they needed to order. Didn't want the 60" that was on it, have enough scalping issues with the 48" deck on the 534.
Nice machine but I may be a little biased since have an X738. Is the dealer going to install the deck or are you? I found the instructions in owners manual a little vague on adjustments for auto- connect feature. I also made some ramps from 4x4 to place n front of tires to reduce deck movement while driving over deck.