WTO=Wide Open Throttle
The HST is very reliable. My previous tractor was a Kubota
B8200. It was made in 1985. I got it in '99 with 425 or so hours on it. I sold it a couple months ago with 1250 hours on it. Not a lot of hours, but 25 years old. Worked like a champ. Kept filters and fluids changed by the book.
Kubota only made the
B2400 in HST, I think...
Both trannies work well(gear, HST). Both are well proven with decades of use.
Some people like HST, some gear. They both are good. Some folks like pickups with auto's, some with sticks. Both are good, but subjective based on preference and experience.
I like HST. But, I would still try both before you buy.
Just remember, most HST are operated similar, but there is a plethora of gear shift style; ie standard, shuttle, glide, ect.
Oh, just as a side note, all the CUTS I see at rental yards are HST... The
L35 I used to rent on occasion was a GST(which I kinda liked too).
Boy!, Here I try and post something non-controversial, and immediately get into religion

Sorry not familiar, with WOT-WFO, should I not ask?