Good Points: usable right away, event though there are more hi-fi sounding modulation pedals out there. you can get more extreme effects if you go inside and tweak the internal pots. sturdy, usable enclosure. a really neat - and forgotten - stompbox.
Bad Points: you can use a 9V battery, although you're better off with a power supply, since it's easy to run the battery down. not a "true bypass" effect - that said, the switching is pretty quiet.
Good Points: stereo outputs! once tweaked, it functions both normally and when the knobs are tuned high enough it goes into freak-out mode. great as a sound source fed back on itself.
Bad Points: not true bypass, takes tweaking the trimpots to make really worthwhile.