I've got them on the NB, the Goodwin Road Race kit. Because I'm a sucker for marketing I upgraded to "better" springs when I had them rebuilt, and instead of 12k/8k, I'm at 13/8.
I dailied the car for a while on them, and at low settings they're pretty decent on the street. I also avoid bad roads when possible (I do that in all my cars), and if it's a road to Aleppo they're a bit harsh, but everywhere else they do real well.
The compromises are a little overblown, imo, especially if you're running stiff springs and the car on the lower end of the spectrum. I've had zero issues with bump travel, and at least on Miata.net they all cry about not enough "droop" as though you'll fly off the road and die because you're on the cheap chinesium units that have negative droop values. I've watched other, better drivers run my car, no issues lifting a wheel on exit or anything, and on bimmerforums, the dude with the super quick E21 (not stock by a loooooong shot) improved his corner exit and traction by mechanically limiting droop travel.
You are definitely losing available capacity compared to "standard" stuff, but use case and how the car is set up I think can mitigate a lot of that.
At auto-x, I love them, but I've only driven the Feals, Konis, and a guy's BC equipped Miata, so, consider that. I asked lots of people who ran them before I bought, lots of good feedback from guys who used them, including a guy who had one car on Feal, one on Xida (THE kit to get for Miatas of all stripes, best one can tell from the Miata forum, and a couple guys here have run them, too, and say they're all that and a bag of chips), they compared favorably in his opinion.
Turn in is great, the car does transitions well, and the car responds the way I think it should to inputs. When I first got them, took them on a spin up the mountain, and got some tire squeal on a corner I never had because I don't typically drive that hard on the hill. Looked down and I was doing 10mph faster than normal for the same driving effort.
Are they as good as all the big name guys, regardless of design (i.e. Ohlins or similar)? I'd guess not, but my rebuild cost was on the order of $125 or $150 a unit (got about two years, 20k-ish miles, dozen or so autocrosses, and bunch of mountain runs).
I think they're hard to beat for a "budget" brand, and seems like they're the Redshift the West Coast.