Sound quality is high. Unit is very quite. I bought this pedal because to get a variety of useful distortions, particularly the tube-screamer, rat, and some very heavy distortion. I'm very happy with my amp's "blues" distortion, so blues sounds from the pedal are of secondary importance to me. I am happy with the "boost/comp", "tube drive", "screamer", "classic distortion", "heavy distortion", and "line 6 distortion" sounds. That 6 out of 16. The other 10 are not very useful to me. I use various strats, dunlop q-wah, boss dd6, fender hotrod deville 4x10.

My unit came with a "free" expression pedal. The pedal amounts to a gain control. I wish the pedal could be used to morph between two sounds. I wish there were more than 4 programmable stomp switches.

I've had it for 1-2 years and it still works with no headaches. I have not been playing live gigs since I bought it, but it seems gig-safe.

Very good value. For the cost of a two distortion pedals, you get (in my opinion) six good distortions. Hard to argue with the economics of this box.

No experience.

I don't care for the sexy gold outer shell. I would be equally (maybe more) happy with a black box. This is a practical addition to my setup.

Rock