So you save maybe a buck or 2 per tank, but you burn a few bucks of gas waiting in line to get it?

I always laughed at the people who'd drive all over town looking for the cheapest price on gas. Simple math seemed to elude them when they thought they were getting a deal by saving 3 cents per gallon.
The GUS isn't recessed, but it has a nice locking ring. According to a friend who has/had just about every mod in existence it seems, he claims the Gus has the nicest switch out of any bottom firing tube mod. My Ant is recessed, but no lock. But it never auto-fires either. They didn't put one on because it was the smallest mod at the time. Even now, the shortest mod is only 1mm shorter. Honestly for me, it's too short in 350 mode. 500 mode is perfect though. It's about the same length as a KFL without a drip tip.
The GUS G22 in polished, 500 mode. You can remove that top cap & have a 201 connection. The GP & GUS stuff is pretty much interchangeable. I'm debating between another Heron & a G22 for my next purchase. Now that I finally got the Heron working, I'm digging it. The flavor isn't *quite* as good as my KFL's, but I just wrap my coils 1 wrap smaller & it does great. Living up here at altitude, the no-leak design is AWESOME! The only problem is that the Heron is almost twice the cost of the G22. What a pricey little tank.