Fallon
Super Member
No wonder you have a difficult choice. I think that if longevity was the only issue then the nod must go to the shuttle. They are well proven to last the life of a tractor. For convenience and easy operation there is no doubt the HST is the choice. And HST longevity - probably not as long as a shuttle - may well be longer than you will own the tractor anyway.
Are those the only choices? There is a good intermediate choice on some models... the HST plus transmission. It has an electronically shifted two speed rear axle that it doubles the number of gears. A 3 speed HST becomes 6F & 6R. That eases the load on the HST pump and will probably help to reduce wear because the HST variable pump doesn't have to cover so wide a range. Less off-axis forces.
I like our HST+. It has been solid for 15 years now. But would say it also comes down to how you enjoy using a foot clutch. If you are comfortable with a foot clutch they work fine & there is certainly nothing wrong with the geared transmission choice.
My own favorite all time transmission was probably a 12 speed power shift with creeper gears, a foot clutch, and a reversing lever on the column.
rScotty
2 speed HST+ is great. But it's only available on the Grand Ls, not the MXes he's looking at.
If you keep up with the filter & fluids HSTs are in the same ballpark shuttles or power shift (GST) machines. Depending on usage & if you include splitting the tesctor fir a clutch they can rival a basic geared machine.
I do a lot of mowing along with light grading, loader work & other stuff. Geared efficiency would make sense for the mowing, but no way I'd give up HST ease of use for everything else. The 10% HP take for HST is well worth it for me.