I did the resistor change in the 3Leaf Groove Regulator and like the increased resonance. If having good tone, more pedalboard space, the flexibility of an effects loop and being able to replicate one's tone are important, I think the Groove Regulator is in a class of its own.
I've played with many filters and just seem to click with the 3Leaf in being able to always get a good sound. A question we all have to ask ourselves is whether any "cool" effect truly sounds good, and the answer, of course, is subjective. Also, the use for the pedal must come into play--is one using it live or just for fun at home, is one using it just for solos, does one need to cut through the mix?
A confession: when I started having GAS, I wanted analog pedals with the most sonic variety within a single unit. Now, I just want pedals with logical controls, that work with both bass and guitar, and where I can replicate/repeatedly dial-in interesting sounds that, upon closer inspection, actually sound musical (one exception: I'm keeping my Subdecay Prometheus, despite the "tweakiness" of it, because there's nothing else like it!).
I am disappointed that Electro Harmonix has two different Qballs models and wish there was a single pedal with the cool attack controls and a wider filter range.
