Purchased from: eBay
Sound — 10
Think Jonny Greenwood's scrawling scribbly wirey guitar on every Radiohead album. Think Loveless by My Bloody Valentine. Also 'does' Sonic Youth (they all use this pedal. It's discontinued, very rare - over Xmas they were going from between 70-120 on eBay, they're in demand, but worth it). It's possibly the most extreme/cool (bar Zackary Vex FX - you don't get wackier than those.
Overall Impression — 10
I've been looking for one of these for ages. They were discontinued mid-ninties (bloody Grunge) and are quite rare. I was lucky to get mine so cheap. I've been playing a couple of years. I have a slightly modded Fender (Mexican-facility) Standard Telecaster and a 30w Vox amp with a Boss DD3, a rare DOD FX76 'Punkifier' - apparently used by Graham Coxon, a fuzz box that I built myself. Amongst other things, tremolo effects, etc. It sounds excellent with that kit. I should imagine it sounds excellent with any kit to be honest though.
Reliability & Durability — 10
If Jonny Greenwood's have lasted since Pablo Honey I think it's pretty safe to say that they last forever. Battery covers do have a tendency to go walkabouts though. I'd definately gig with it! You can't beat it. I'd gig without a backup too, use a DC Brick instead of batteries, then it won't die mid-gig. Its not massively battery-hungry. My DD3 gobbles up power like theres no tomorrow. On an aside I would advise anyone seriously considering gigging to use a power brick, modulation FX (delay, flange, trem, vibrato, harmonizers, shifters, phasers, etc) eat duracells like they've stopped making'em.
Ease of Use — 8
Just check out the reviews on Harmony Central to see how great it is. Also see http://blamepro.com/marshallshred.htm to see what the controls do - stuff the manual. Who needs instructions - play around, experiment. It's grin-inducing.