I really don't think most people buy a certain transmission in their tractor because of the initial cost,if they are going to lose or gain a couple hp. do to a certain trans. or what it is going to cost for a repair, if needed somewhere down the road.They just want a tractor that best suits there paticular needs.I bought a tractor with a hyd. shuttle shift and creeper gears, may have ended up costing me more than an hst which is what I was going to buy and wanted in the first place.I haul logs out of the woods , pull heavy ground engaging epuipment etc. so the dealer rep. and tractor dealer said I wouldn't be happy with hst.. I took there word for it and went with the hyd. shuttle shift, do to a knee problem, I went with creeper gears for the snow blower.They didn't have the tractor I wanted on the lot,they had to install the creeper gears which I got at cost of the gears so they were not trying to pull a fast one over on me they were just being honest.There are many different types and sizes of tractors and all for a good reason,what will it be used for.I really wanted hst but I am very well pleased with what I have as it meets my needs very well.Is there a downside to hst,in certain applications it seems there is,in many other applications I would think it would be better.I have hst in my lawn tractor and would never go back to gear drive for that application for sure.