Mine were so crashy/stiff/skippy on the car on the rear, but so much dive on the front. They shouldnt have been fooked either, were 4 months old when i bought them with apparently 4-5k miles use on them.
Agree though, get a feel of each set-up as they suit completely different driving styles, the AST's could be driven a lot more aggresively, whereas the H&R's needed a bit more ocncentration on the rear end for me.