I don't have any experience with them on Supras, but from what I've heard and seen the valving is similar to most of the other Japanese/asian stuff. So it's really not that great. So a rough ride and adjustability that doesn't really do anything just like everything else. So if that's what you want, then saving a couple hundred and getting something cheaper may be a better choice.
Unless someone has any data or experience to prove me wrong. And if they do, I would like to see it. It would be nice to know which dampers are bad and which aren't as bad.