I'll heartily recommend an Aguilar Octamizer. One of the best octave pedals I've tried, hands down. And I own several! Currently running an Octamizer, a COG T16, a 3Leaf Octabvre mini and a DOD Meatbox but out of those 4 the only one I can 100% say I'll NEVER sell is the Octamizer. In fact, I'll probably buy another one at some point! It's analog, so no lag, and has an excellent range of sounds available with th filter knob. Truly delicious.