tbh absolutly honest m8, imo no!
haha.

on my rx7 i bought the £2000+ all singin all dancing Tien in car adjustable coilovers adjustable height, damping, rebound, top mount etc.
and on the cossy i put a pair of £650 avos. just adjustable damping and height. and theres near no differance in thier performance, although they are differant cars, the improvment over standard with the tiens was only so much and the avos made a miassive differance to the cossy!