Have an old Shocker too, and it is very good indeed (selling it for needed cash...) - unfortunately it is very heavy and is using a lot of air very fast... And the firing rate isn't quite up to date without the turbo which is now a no-no(I think I'm wrong regarding to the newest batches??)... But I still say the Shocker is the most consisten/accurat marker, doesn't almost ever break and is very quiet!!
This said I have changed to the Impy... It really rocks - it is lighter, faster (?), more air efficient, more gadgets and it looks just as good as the Shocker...
Pinky, Team Wikings