Good Points: expression pedal! (clearly its major selling point); wide variety of interesting industrial/noise effects (some you won't find anywhere in this price range); ability to store favorites; built-in tuner for use with instruments (like stringed ones) where applicable
Bad Points: for switching between user and preset there's a small button on the BACK of the unit (?!?); only six user locations; not editable aside from the single preset parameter assigned to the pedal (sucks); a lot of the expression pedals on these units are infamous for crapping out (i.e. refusing to stay in the up position and I've heard that some simply broke - sujective to the extent of its use, I guess)
Good Points: interesting sounds hard to find elsewhere, expression pedal
Bad Points: ac adapter only, built in noise gate, slow patch switching, less than idea interface, no editing of patches at all
Good Points: Very unique selection of effects. Real time parameter control via expression pedal. Built to last. Very user friendly, a no brainer. A good investment, will definitely rise in value over the next few years as it gets more and more rare.
Bad Points: Noticeable volume drop when switching to wet signal. Volume knob controls bypassed AND wet signal!! What good does that do?! Pause when switching patches. Can't edit patches. User bank only has room for 6 patches.. what if you want more? Very awkward scrolling between patches.
Good Points: Lots of VERY odd sounds indeed. All noise players will find something they like. Very strange alien effects you won't get anywhere else. Does so many cool noises
Bad Points: Discontinued and hard to find, Appalling bypass, Pain to choose the patch you want, Not too sure how long it would last, Some effects sound a bit weak and pointless.