Get the AST's or other re-valvable shock and start playing with the valving. My Motons were crap until I had someone work their magic on them. Same with Misty's Penskes. In the rear, you can find 2 way dirt track shocks for CHEAP and then valve them for what you need. I was valving the penskes for a while until I hit a brick wall dealing with high speed vs. Low speed valving.
I have a guy if you need one.