Hi I have a 07 JD x300 with 85hrs that the trans went out on and I'm trading it in I would like a bigger deck and better trans NO K46! I'm looking at a x320, broadmower or a cub 2550. I cut 2.5 acres and pull a spreader and a cart once and a while. The ground is not the most level some humps and bumps. My budget is 4000.00. Thank you for any thoughts you may have.