Ian C sent me a link to a pretty massive database - I had searched but never found something so complete. I see some models with close to a second duration, just at a glance.

I'm guessing these could be a good lightning-through-the-window effect when there's no budget for the hollywood-style generators (for video or film motion shoots). You can do that in post, but nothing looks as real as reality. Now I can at least cross reference what's available for sale. Wondering if slightly lowering the trigger voltage might prolong the burst as well.