Haven't compared side to side with my Octavbre mini yet, but tried on guitar. Annoyingly the range to set the lower octave on lowest notes also controls the upper octave. In an ideal world it would leave the upper octave intact and only control the lower. If you had this on guitar setting, and on bass setting had the reverse (only add lower octave on higher notes, upper on all) it would be a great improvement for me. I'll continue exploring it 🙂