I replaced all 4 assemblies on my 2008 Expedition 2WD earlier this year at 86K miles. I researched this topic extensively and ended up going with the Monroe QuickStruts...ordered them on rockauto.com (best price around, even with shipping) and installed them myself. I am pretty mechanically inclined but this was my first time doing any suspension work and didn't find the job to be too difficult. The rears were a little harder than the fronts, mostly because it took some maneuvering to get the bottom of the rear struts out of the control arms, then keeping the bottom of the new ones at the right position while I installed the lower strut bolt took some time, but all in all it wasn't too bad...took me about 7 hours total (1.5 hour per side in the front, 2 hours per side in the back), which I didn't think was too bad considering it was my first time. If I had to do over again, I'd go with the Rancho QuickLift assemblies to get a little bit of lift, but have been happy with the ride quality of the Monroes (still riding well 15K miles later), and they did lift up my truck a little bit (it was sitting low due to the old worn shocks). Either way, I'd recommend going with the assemblies vs. messing with compressing the springs to get the new shocks in, then risk the bushings or other plastic parts being damaged or worn, etc., as I've heard to be a problem with our trucks.