Greg,
My friend that I mentioned getting the Stinger from now carries a 8(A?)X. We compared them both indoors and out last night.
The Stinger was adjusted to the tightest hotspot I could get before it started to "deform" (similar beam quality to the SF), and most of my comments will be based on that.
At that setting, the Stinger's hotspot is at least twice as big as the SFs, but not quite as bright. dano compared it to the E2, and that's pretty close to what I'm seeing. The hotspot is kind of between the MN03 in a E2, and a P60 LA, both in size, and brightness (it might be brighter with the new battery-the one that's in there is five years old, and was discharged nightly for over four years).
It can get as tight as the SF 8x, but is uneven and misshapen when focused like that. The wide focus is ok for when you don't need a bright light, but it has a hole through the middle of it. Though the Stinger beam's corona is not quite as bright as the SF's, it is larger. The corona is about the same size and brightness as the E2e's.
Overall, I think the "new" Stinger is a more usable light, since it has the larger hotspot and corona, plus the ability to focus down for more throw outdoors where the difference in beam quality won't be very noticeable.
I'm going to put the new battery on charge overnight, and then compare it with the old one to see if there is alot of difference. I may like it even more tomorrow