I've got a JX 55 with loader, but no cab. I've got no complaints for the 6 months I've had it. It's quiet, visibility is great (no cab), and has plenty of power for my use. The controls seem a little cramped on either side of the seat. There are plenty of nice standard features like rear power plug, rear work light, accessory power to right of seat (may be used by the cab?), etc. I haven't been able to pull the disc yet this spring, but the loader hauls a lot of dirt and pulling a spray trailer was no problem.
Mark