I have a Skyjacker lift. I know there have been some people who have had issues, but I've been pretty happy with it. I should point out that it was on the Jeep when I bought it (with 27,000 miles on the Jeep). I now have 70,000 on it and have never had an issue. UBJ's are shot, but that's a given. I'll replace with Al's UCA's and carry on. As far as Ride Quality, I have never been in one of the other brand lifts, so I have no idea. I like the way mine rides though, if that means anything...
Rescu2000
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2003 Liberty Sport 4X4
DIY Frankie Lift, BBS Rims, Aussie Locker Rear, DTT Front, Renegade Rack & Light Bar, Custom Front Bumper w/ Warn XD9000i, Custom Rear Bumper, JBA UCA's, Full Skids(Mopar, Kilby and Super skid), CRS Rock Rails, CB, EVIC, Nav, power dim mirror, (2) 8" subs under front seats.
http://www.cardomain.com/ride/2512777