So many noise gate options. My favorites have been the OG Zuul and the GupTech SUN. The Zuul is great if you already have something on your board to split the signal. Otherwise, I find the GupTech to be really close, and it has the key in and out built in. I didn't like the Revv or the Zuul+. I always preferred the NS-2 over the ISP gates (had the OG and II versions of the Decimator and G-String, and had a pro-rack G). Outside of that, there are a ton of newer boutique options that I haven't tried. I tried the Sentry twice and had issues with the unit both times, so wasn't too happy with that.