i was running rosso's all round untill i had to change the rears, i went for 040's after and didnt like them as much, im on a set of toyo's at the moment which were on the wheels when i bought them and there not bad!
heres some pics of what i can figure out as the only difference, maybe its a different compound of rubber?
heres the rosso
and heres the normal one
if you want to spend some big £££ go for the pzero corsa's