My summary is
hp loss with HST is very small.. if this is a problem, wrong tractor for you
yes, you can run high RPMs for PTO speed yet infinite creep from 0 mph.
Personally, my legs and arms are much less tired using HST all day.
HST is extremely reliable, reported failures near or at zero
For me, HST is most beneficial when lifting 2800 lbs concrete culvert with FEL and seeking to set it precisely within .25 inches on a ground location while avoiding bounces and hydraulic surges. Extreme slow speed and ease of operation allows me to focus on ground conditions, tilt, are the wheels on the ground or is a rollover beginning... and to drop load/correct before it all goes topsy turvy. This is what I mean by precision....
Yes, it BECOMES the wrong tractor.
The RIGHT tractor has a lot more power, weight and other features for about the same price because it is a whole model size bigger.
It isn't about the power loss in the hydro trans, it is about the power (hp, features and weight) loss in the whole tractor for a given purchase price.
You have to DOWNSIZE the tractor to get Hydro for approx the same money.
Of COURSE I'm assuming a fixed purchase price, my resources DO have limits.
I suspect everyone else's do.