I think this is where SureFire's diversity of product design really shines because there exact opposite is the case for me! Is it the clickie that you like? Or actually the crenellated bezel?
(I find both annoying 🙂 )
BTW, for clarity and to avoid confusion it is better to refer to the likes of the E2DL by it's model number rather than name: "E2DL" rather than "E2D LED Defender". This way there is no doubt which product is being referred to.
(6PL, G2ZL, 6PDL etc are all specific and definite descriptions)
It can get confusing, especially when SF carry out 'stealth upgrades' to lights, either by using newer LEDs, or some other trickery to increase the output.
I have just bought an E2D LED Defender, current version (5/200 lumen), and I love this light more than I have any other light for a long time. The option to have a long running useful low, with a punchy high, tight beam is really working for me right now.
This light goes everywhere with me, night and day at the moment, but I think I'll look around for a belt pouch, as I don't personally like lights clipped in pockets for my purposes.
I didn't buy it for the strike bezel ergonomics, but I find the crenelated tailcap great for tailstanding, and I like the clicky tailcap (I was considering the LX2, but there were enough features on the E2DL to win me over.
Apart from the serial number (and of course, this is only the number of the body tube, not the LED or electronics version in the head), there doesn't seem any way of identifying the model spec of some SF lights.
I have an L1 also, the one with 1.1/22 lumen output, from the 2006 product year, I think - Luxeon, instead of Cree. I greatly prefer the low output, long runtime of the older L1, and see that as it's main advantage.
Finally, I wish that SF would include the F04 diffuser with all its small TIR lights, I have not yet used one that didn't benefit from the diffuser, when indoors, under normal conditions. I actually added such comments, when I registered the warranty online, adding that a flip up diffuser would be even better (the rubber F04 on the E2DL makes it less 'sharp and scary' as well as preventing pocket snagging).