I'm on the waiting list for a Screwdriver with the fine folks at ToneFactor.com and I recently saw and heard the new version of the Tube Zone which looks very cool. Has anyone compared the two? I have several pedals and the Screwdriver is the most unique sounding dirt pedal I've heard in a while. ( Played one at the Dallas Guitar Show ) The open sounding, sharp attack is what's got me thinking it will stack great with the pedals I already have. Thanks!