So, I've realized that the Digitech is pretty much the way to go for a good octaver. But hiw about the filter/synth sounds? Any good? There a bit pricey over here and if I'm gonna order on from US I'd like to know what I'm getting... What I'd like to get from it, apart from the octaver, is a usable filter effect to get some "movement" to the sound and maybe a funky wah/envelope type sound... So, spill it! What about the XBW as a synth/filter/wah?