I plan on going with MMs kit some day, if I could ever stop buying tools..
I personally would not settle for one of the cheap kits. I rode in a car with cheap Megan Racing coil-overs and it was super bouncy (spring rate was too stiff for the shocks) and quite unpleasant.
Sold - Black 2000 Mustang GT, gone but definitely not forgotten
- Silver 2007 Corvette
Current - DHG 2001 Bullitt