What vehicle lift are you asking about? TJ, XJ? I can vouch for the XJ long arm lift. I got one of the first batch runs earlier this year, and I really like it. It rides better than both of my other two stock XJ's on the street, and works really well on the trail. I've run Fordyce, the Rubicon twice and partially on the clean-up, and been to Hollister Hills a ton of times. The components are top-notch and the welding is really nice. Fit and finish was suprisingly accurate and consistent. My only complaints are:
1) No matter how hard I tried, the track bar mounting bracket that attaches to the frame would not stay tight. I tried different bolts, tightening it in different sequences, etc. I finally just welded it and haven't had a problem since.
2) The lock nuts that they provide with the kit are garbage. RE uses the same ones, and they just bugger up the threads too much if you need to back them out to realign or adjust something. I switched most of them out with nylock nuts before installation and was happy that I did later - especially on the u-bolts.
3) The instructions suck. If you're not mechanically minded or know how the suspension works-forget it. I didn't have any trouble installing it, but there were times when I wished they went into further detail-especially on the arm length adjustments when the install was complete.
Overall it's a great kit. I've see photos of RE's new long arm kit for the XJ's and it doesn't look like it will come close to FT's. BUT, that's my opinion based off of pictures, it might change if I see it out on the trail.
Here's a good underside shot:
The arms make decent rock sliders too:
This is my DD also. I'm suprised at how smooth it is on the street.