From some one with first hand experience with OME and AEV there is no comparison. I'm very happy with the AEV 3.5" Premium lift. I first had the OME LT kit from Northridge 4x4 and I did not like it at all. Shocks were to soft and JKS track-bar was to week gave me DW. The OME kit is not complete. It dose not address steering, brake lines, bump stops, track bars or track bar brackets problems and castor problems. So if you get the parts to address all the other needs then the OME kit is not cheeper then AEV. Also the OME kit gave me 3" on my 4door with hard top.
Even my wife couldn't stand the way the OME kit drove. She hated the way it would shift from right to left in the rear when going over bumps. Now she steels the keys from me all the time. I will say when I first got the AEV lift it was stiff but after adding bumpers and a winch it now rides great.
^^^ I think jboss touches on several valid points. The OME kits aren't complete and the only way I'd recommend them is as a full set up like Northridge sells.
I've run most of the different OME coils on my JKU (what most people consider the medium & hd series) and now I have the 618/619 +40 coils with OME long travel shocks.
I've wheeled them all pretty hard and the long travel setup flexes well off road.
On road the ride has always been just okay - even after dialing in with full arms, etc. I've never bought into the "better then stock" line. As jboss noted, the ride does get a little squirrely after a series of bumps (fading?) and can even feel harsh. Never had DW though... I'm not saying its a bad ride but it rides like a lifted Jeep on 35s.
With all that said, I'm thinking about drinking the AEV koolaid and switching up the lift. Everything else I've purchased from AEV has been top notch so I don't expect anything different from their lift kit.
