Hi everyone,
I tried an MXR Bass Octave Deluxe yesterday at the guitar shop and I thought it was pretty nice until I went up to the G string. For some reason between the 1st (G#) fret and the 5th fret (C) the tracking was really off and the note would go up and down randomly.

All other notes were fine. The lower frets on the E string weren't very precise but it was OK for the price I guess.
I was using a Fender American Jazz Bass into an Ampeg combo.
Anyone got that problem before? Is it common on all those pedals or the unit was defect?
Actually I'm not really looking for an octaver, more of a subtle sub-bass generator... any suggestions? The Micro-POG?
In fact I was supposed to buy an used Strat Plus 1988 (Red Fiesta) yesterday and my bank froze my pay check.
So I finally bought a EHX Bass Big Muff Pi as a consolation prize until the check is unfrozen... I'm pretty happy!
Thanks!