I just bought my second E2 line. I bought an E2, after having already bought an E2e. I chose a second E2 over the 6P for a couple of reasons.
(1) The E2 is an easier carry, if only for its length. But it is also narrower than the 6P. The E2 as it is fits perfectly next to my wallet in my back pocket.
(2) It puts out nearly as much light as the 6P, yet burns longer (even if marginally).
(3) Pyrex lens. Don't know how important that is, since there isn't a HIGH OUTPUT lamp for the E2 (HOLA), but it should stand up to the standard lamp better, right?
(4) I ordered the E2 second because, quite frankly, I'm one of the ones that don't particularly like the pocket clip on the E2e. (At least, in getting the GM version of the E2e, I didn't have to get the anti-roll bezel.) So for my second E2, I ordered the standard, so I can remove the clip and hopefully no have a big
channel in the side of the light where the clip is supposed to be.
(5) I have two E2's now for two different purposes. One of them will remain in the house, secured and unused, for the hopefully never "bump in the night," to flash any intruder, hopefully helping to dazzle and giving me a slight advantage in any further action required. I feel with the power of the E2 nearly that of the 6P, it can fulfill this requirement. The other E2 will be outfitted with the MN02 LOLA (which I just pre-ordered from Surefire, BTW; they are getting that close) for daily carry. I'm guessing that I'll pull the LOTC from the E2e and put it on the E2, and put the MN02 in the E2, with the pocket clip removed. But I digress.... sorry.
The bottom line, though, is who am I kidding... I'll most likely end up getting a 6P as well. Or even ... ulp... the M2.....
Oh, good size comparison here, from thelightsite.cruxial.com.
From left to right: Size comparison - MiniMag, 6P, E2, Arc LS 2AA, E1e, Arc LS 123