I have used all types (sometimes in the same day) and get used to all of them. One thing I have noticed on this site is that a lot of people who complain about treadles are trying to use the treadle as a "rocker" with their foot sitting on it the same way the whole time. That is not how the treadle on the B and L (not Grand L) models is setup. It's intended to work as follows:
1) for forward, your heel is on the floor and your toe is pressing the forward part of the treadle.
2) for reverse, pivot back at the knee so that your toe is on the floor and your heel is pressing the rear part of the treadle.
Basically, you pivot at the knee to move your heel and toe into proper position so that one is the pivot and the other presses down.
I have tried to operate these treadles the wrong way, as some people claim to do, and can't imagine for the life of me how that would even make sense.
Note, other Kubotas, like the Grand L, have a different arrangement that does allow the foot to remain stationary on the treadle, like a rocker.