I just like to share a first week experience with my Eventide Pitchfactor. I use it in a combo with my Stagg. For the ones who do not it, the Pitchfactor is a harmonizer. What it basically does is to add voices to an incoming (monophonic) signal plus loads of delay, feedback and filter options. See Eventide - PitchFactor
for more details. There are several reviews and youtube clips on the web but mostly emphasizing the rather extravagant uses of the pitchfactor. And I have nothing seen for an EUB.
Indeed the pitchfactor can give some really outrageous effects but personally I'm not so interested in those. The more subtle ones though really appeal to me. These are my favorites:
Diatonic/Quadravox: adds up to four voices. Lets the bass play chords. Chords are created based on a key and a scale. Scale choice is OK, though on the eventide forum there is a cry for user defined scales. May come in a firmware upgrade? I really like this one if used subtly.
Micro-pitch: adds up to 2 slightly detuned voices. Great subtle chorus/flanger effect.
Pitchflex: Actually meant as tremolo/pitchbending effect. However, I realized I could use it in a very practical sense. It allows you to simply electronically retune your bass. Very handy if if you need a low B occasionally on a 4 string bass. Or, as a newbee, I still struggle to play along with horns. With Pitchflex I can simply change my bass into a Bb or Eb instrument. Note this use of pitchlfex will on work decently with a rigid body EUB that does not produce sound by itself. Otherwise you will get a mix of the original tone and the retuned one.
Sound quality is great. No noticable delays. Very sturdy build. I'm very happy with it.
Hope this is useful to someone.