I don't think you can really compare the z to an evo or scooby, after driving my dads impreza sti around for a while they are totally different beasts. It's not turbo'ed so you don't get such a brutal accelleration like u would on the impreza but its still seriously quick only in a linear fashion. BUT you certainly can compare the two when it comes to quality, IMO the scoobys look as though they have been covered in glue and driven through halfords window, the interior is made out of the same stuff selection boxes are made from and its got the same build quality as a lithuaniun fairground ride.
Reliablility too, no turbo's, no intercoolers no worries, plus servicing is as cheap as you will find on a performance car.
If you want brutal power and a ride that will turn your bones to soup and wear a burberry cap then choose something like a scooby or evo, if your after comfort, reliability, head turning looks, great handling, serious fun and enough power to leave most cars in your wake then get the zed.
R