i totally love mine. granted, it came on the cruiser when i bought it so i dont have much to compare to, but i also bought this one because it drove so much better than the other ones i test drove. I'm in provo if you'd like to come test drive mine to get a feel for how it rides. pm me if you're interested.
To OP, FWIW, I had 3" lift on my 80 w/castor correction. Ride is firm but I didn't find it harsh. I also drive a Porsche and am used to a firm ride. Both vehicles are purpose built.
My cousin did the low lift on his 80 and was extremely pleased with the results--no castor correction needed.