Well...
My experience with this particular pairing is 20 years old, so consider that as you read.
I owned a '90 Dodge Shadow. After a few years, it felt to me like it needed new shocks & struts; no surprise given where I lived and where it got driven. I bought Monroe Sensa-Tracs for the front first. They were different than the factory strut feel; softer at static ride height (in order to be more compliant over small bumps, I suppose?). They tightened up nearer the ends of the stroke.
For the rear, I wanted better control of porpoising, because a particular stretch of concrete road that I drove somewhat regularly was SUPER good at inducing just this condition. I bought KYB GR-2s for the rear. All porpoising was gone immediately. The ride was not at all hard, but it was better controlled even than the car had been when new. I liked them better, and so bought them for a subsequent vehicle all around.
Neither the struts nor the rear shocks needed replacement again.
So, my ancient and out-of-date feedback is that the Sensa-Tracs were more compliant in the middle of the stroke, whereas the KYBs were more firm. My preference was for the KYBs. Not everyone has the same preference.