Well I'm new to the forum but have been lingering and posting a little bit here and there.
I just got the Rancho Quick lift leveling kit and matching RS9000XL shocks for the rear installed on my 05 S-Crew and figured I'd offer up a little review for you all.
Price- roughly twice the price of the spacer style kits. (4 wheel parts offered a by 3 get 1 on Rancho so I added the rears too)
Install - You will need to have a spring compressor for struts and an alignment afterwards, so I opted to have them professionally installed by 4 wheel parts.
Look - Looks perfectly level ( I will get pics up this weekend)
Ride - This is the best part My truck rides like a caddy now. It's AWESOME. Plus since all the shocks are adjustable I can change it up for trail riding, towing or hauling. Later this summer Rancho will be releasing "My Ride"
wireless control system and I will be adding it. It allows you to adjust the stiffnes of your shocks from in your cab via a remote control that displays the current setting. All hardware is mounted outside the cab and pods or guages just a remote that you can throw in the glove box.
Overall - I give it a 9 out of 10 I love everything so far but it was a little spendy (about $650 all said and done after adding the rears, install, and alignment).