Realizing I only seem to use octave when I'm playing synthy lines, I wonder if the added envelope filter the XBW/BSW tacks on in mode 2 would be worth replacing the octave slot on the board.
The Oct+filter setting on the BSW is really nice and the octave tracks really well but.....the OC2 plus the standalone filter setting sounds way better. I like the OC2 + setting 1 combo for synth and setting 2 on the BSW to get a fat filter sound.