Coilovers are the ultimate in that you have full height adjustablity and on decent kits, adjustable damping too, but you really don't have to have them if you don't want to!! The harshness really depends on what kit you fit. I'm running Eibach springs, Koni T/A Gas shocks, and Eibach Anti roll bars - it's about 35mm down on standard. The handling is fantastic and the ride isn't bad at all. Personally, I'd like a bit lower, but it depends how usable you want the car to be, especially if you have speed humps and crap roads where you live!