Feature:
If you're looking for something to experiment with, create unique sounds with, or just play with, this is your pedal. If you're looking to sound anything like you're playing bass when you're not, move along.

Quality:
If the pedal had a better sound in poly mode, I'd rate this much, much higher. But as-is, this is just too much money for a pedal that just does this much unless you're into really off-the-wall sounds.

Value:
Over-priced unless you just really want a pedal that does what this does.

Desirability:
If you want an octave pedal, you want one that sounds better than this.

Sound:
The sound of the regular, sub and poly modes just sounds like a very unpleasant synth; not real at all. I was looking for something to just take my acoustic down an octave; this makes it boomy and fake, and not the cool kind. Another complaint about the poly mode: while it does track very well (MUCH better than the OC-2), even with range maxed out, the notes get quieter the higher up the scale they are. Your E's will be blowing out the speakers and the D's will be barely noticeable. Also, if you're using it while you're playing chords, the pedal often picks up two notes and plays them both an octave down, which sounds like crap. You can fix this by lowering the 'range,' but by then it's not worth it anymore except maybe on a two-chord song. That said, the sound of the distortion setting is pretty cool though.

Ease of Use:
Controls are simple and straightforward, that much it has going for it.

Support:
Gave it a 5 because I've never had to use them and don't expect to. Boss makes good stuff.

Overall:
It should be noted that I use this pedal just for guitar; I'm not speaking to what this can do for a bass, but frankly, they make five-string basses for not much more than this pedal, and if you want notes lower than that you're nuts.