something I've been pondering for a while.. recently got an ISO-5, and had a Pigtronix overdrive to fill the 18v spot on it. ended up selling the Pigtronix, thus leaving a blank spot on the ISO-5. i spent way too much time trying to fill that spot, perusing just about every 18v available. my conclusion? i don't really see the allure of 18v. i want my overdrives to compress a bit. everyone swears by the OCD/FD2 at 18v, but i actually prefer them both at 9v. i know Bearfoot regulates almost all of their pedals up to 18v, but if i got a Candy Apple Fuzz i think i'd actually prefer it at lower voltage. anything higher than 9v on a fuzz seems completely asinine. the one usage I could see being worthwhile is on a compressor pedal, maybe an EQ, where you want a low noise floor. I haven't tried it out yet because I'm not trying to take a punt on a subtle ass comp pedal for $150. i dunno, thoughts? i ended up upgrading to a PP2+ so I'm out of the market for any 18v pedals.