You're welcome (for whatever my input is worth).
One slight bit of interesting trivia about the ZebraLight designations/model numbers has to do with the F designations. When I first started perusing the ZebraLight products list and tried to interpret all the model designations, I found the "F" in the model numbers confusing.
I originally thought the "F" meant "flood" and it took me a while to see that the "F" really just meant "frosted" or "floody" (with quite a difference existing between "floody" and "flood" beam types). Back at that time -- when I was looking at my first ZebraLight -- the only flood was the H501/H501w.
Given that all the "F" designated lights have frosted lenses and are shown as "floody" rather than "flood," "F" for frosted seems to make sense, and any ZL lamp that's listed with an F has a frosted lens and represents using the frosted lenses to achieve the floody description in the beam type. Really, in the ZebraLight designations, "frosted" and "floody" might as well be used interchangeably -- if it's frosted, it's floody...if it's floody it's because it's frosted. The truer floods (H501, H502) have no such designation in their model number, but those that are made floody by virtue having frosted lenses do carry the "F" designation.
Again, I originally found that really confusing (what the heck does "F" mean?)...especially when trying to figure out which ZebraLight I wanted when I was really unfamiliar with their offerings.
OP, I think you already know this stuff, but I think anyone who goes through the learning curve with ZL offerings struggles at least a bit understanding the model numbers and what different parts of those numbers mean.