Replacement Rear Leaf Spring Packs for Stock '00 XJ...Opinions Wanted

I think it's time to replace the sagging rear spring packs on my 2000 XJ. I measured the body last night at 18" in front and only 16" in the rear. It looks like there are at least three aftermarket sources for complete packs (I have pretty much decided not to go the helper spring route). They are:

JCWhitney

Quadratec

RigidSteel

I'd be very grateful for any real-world user feedback on these. It looks (from a lot of searching in the archives) like Quadratec is famous for goofing up shipping of orders, which would be a negative factor. I'm very interested in any reports on the RigidSteel springs, but please let me know which of their several models you're running if you've got these.

Many thanks

Get Alcan's

Call Alcan and have them make you a set. They supply many others at a higher price.

Old man emu; great ride

I needed new packs and was on a tight budget so i bought a set of 4" Pro-Comp leaf packs from Summit Racing for $90 each. They already have a 3 deg. shim attached and they have the factory rubber bushings installed also. They ride and flex great. I'm more than happy with these packs, especially for the price!
-B