So, I keep going back-and-forth as to whether I prefer my Twin Jet with or without using a TS-9 to boost it, and right now I'm in a "with" phase. The main downside to this is that, with an OD boost, it gets basically impossible to control feedback when not playing without either stomping the tuning pedal or turning the volume knob on my guitar to 0. I don't mind the standard "high-gain hiss", and I'm not trying to tighten any start-stop playing. Since I mostly play a lot of doomy death metal (think Incantation, Ceremonium, etc.), I really need a gate solution that won't interfere with sustain and decay of notes and chords. What makes this trickier is that the Twin Jet has a rather crap FX loop which I'd rather not use (and I never use any effects anyways, my chain is always guitar -> tuning pedal -> sometimes OD pedal -> amp -> cab), so most of the usual noise gate candidates (G-String, NS-2, etc) are right out. What options are left that will fit the bill here? I've heard that the ISP Decimator and MXR Smart Gate don't do as well at holding sustained notes as the loop-based gates, and I've also heard the Decimator doesn't work well in a high-gain context.