As parenthetically referred to in my post (!) the Yammie has a tap tempo button and footswitch input, something every respectable delay unit should do..... There's something about tapping the tempo in rather than having it lock to midi clock, maybe a slight amount of stray timing, helps humanize it. Plus some nights you can do quarter note repeats, some nights triplet quarter notes, etc.. Anything to add to the randomness (especially when you use an arranger!)........