In looking for an envelope filter to use with my synth (pigtronix mothership) and fuzz (whooly mammoth) pedals, it seemed like finding one with an effects loop would be the best way to go (that is, so the envelope detector would still respond to my playing dynamics). But, then, in looking for an envelope filter with an effects loop, I found that my options were very limited. The only "reasonably priced" (to me) one is the ehx q tron +, but I don't like the tone of the q tron (I find it to not be warm, it has this thin whipping sound to my ears). The only other attainable option for me is a used 3 leaf wonderlove version 1 (which I can find used for about 225$). The groove regulator v1 and v2, wonderlove v2, and the newer chromatron, are all north of 300$... The pigtronix ep2 has a side chain trigger input - I guess I could split my signal and send a clean signal to trigger (doesn't seem ideal, but can be had for 150$). Am I missing any? A few questions: 1) For those chasing similar analog synth bass tones, do you find an effects loop to be an important feature on your filter? If not, how do you optimally run your fuzz/synth and filter pedals? 2) What is my best effects loop equipped option for under 250$ (and ideally closer to 200$ or lower)? 3) How does the wonderlove v1 compare to the other 3 leaf options? Thanks!