FNM - they are, almost certainly, a re-hash of someone else's product, just like almost every other pedal, amplifier and guitar out there. Maybe they do use the same value components as an OCD etc, although I think that unlikely because many of these things sound somewhat different to the pedal they claim to emulate. For me, I'll try to buy the pedal with the sound I want, and many of these things have their own sound because of changes made to the circuit or values. I do like the tiny size, but have never had the sound[i] I wanted [/i]from the mooers I bought (anyone want an elec lady?). My favourite overdrive/distortion pedal is a Visualsound Jekyll & Hyde, but no-one ever rags them about ripping off the tubescreamer or Boss DS series because they are a 'home product'.
Tempted by the Rat and the tuner right now. Wish they made a reverb - everyone does delays.