just about every reg out there at one time or another
GX-3 Autococker with dye ultralite, Halo B, Messiah secondary, Guerrilla Air Assault on 68/4500, Guerrilla Air Ambush as backup
Very small, very low profile reg. no shoot down, no drop off, and no leaks.
None as of yet
I have the assault reg that I put on one of my bottles that was sitting around, but since I sent that bottle in for hydro, I've been using the ambush. This thing works great. It's just as fast as the assault I have, and even smaller. The reg has no leaks whatsoever, and was sitting around for a month or two before I even started using it. It kept 4000 (what it was filled to) for the whole time. I can still swap out the spring and make it a low pressure, even though I don't need to, so it's both a high and low pressure reg. I love this reg just as much as the assault. I'm going to keep using the assault as my primary when the bottle gets back, and let this one be borrowed by friends (after all I paid more for the assault, if one is gonna be taken, I'd rather it be the ambush, because 50 bucks isn't much to replace it.
Great reg for any gun, and a great backup. and cheap as can be. 50 bucks for a new reg... I could have sent the bottle to crossy but this saved me a lot in shipping costs and time waiting. I hate being a bilboard, or advertising tool, but I'm gonna plug them here because I like the reg so much: www.guerrillaair.com