Ventrac is expensive - but there is a reason for it. It's the Land Cruiser of tractors. Super easy to service, very well engineered, and most importantly an amazing selection of easy to use attachments. We've had a fully decked out 4520z since 2023, and if I lost one, I'd have to buy another one. With duallies, it's very low impact on the established turf and capability of a fleet of different vehicles. We use power bucket with grapple, landscape rake, power rake, tough cut, finish mower, turbine blower, and brush all the time, v-blade in the snow, cultivator & primary seeder on new turf, and aerovator + spreader on established turf. In the fall their vaccum system is a blessing (it's the use case we originally found them for). Ability to mow into large ditches with 30+ degrees inclination is unparallel. Ability to traverse uneven terrain and get rid of blackberry bushes, including their roots is alone worth it. With Ventrac you buy once, cry once, smile often. I also wouldn't go diesel with Ventrac - their Kubota gasoline engine is more powerful and easier to maintain.