i just got my car lowered. i used the washer method for the rear, but the mechanic also replaced the bolt with a longer one, so you can fit the washers on more comfortably. total was $10 for parts.
for the front, the mechanic got an ingalls camer kit for a legend, and modified things to fit on my accord. this kit was $160 for the front, but it will never squeak like most other camber kits will.