I guess people compare it to the rst because the rxt design is just not forgiving enough for our mt 82's and is a factor, a long with sticky tires, the stock remote shifter and lastly but most important, bad driving (shockijg the drivetrain with clutch dumps is just asking for it) for breaking those mt 82s. I'm still breaking mine in and not pushing it hard but I dont have any chatter/squeal. Unless chatter means the friction grabby feeling when you're taking off from a start and dont give it enough of a blip of throttle.IMO the Exedy is on a whole other level than the RST. Hell, they aren't even on the same planet.
Exedy: billet pressure plate, end user replaceable components, sprung hub ceramic, SFI certified. #racecar stuff you can live with on the street
RST: a strong replacement clutch that drives almost like OEM.
Exedy is very big in the racing side. I'll run nothing but them as they are very responsive to your needs and very thorough with their information.
For a NA car a hyper single can't be beat, and the ET04XD is the bees knees on a boosted car, if you can handle driving the chatter or squeal prone ceramic friction material. I only care what it does once the hammer is down and the power is pouring in and the Exedy flat out holds.