I had an E2e for a long time, gave it to a friend and got an A2. Also have a U2 and HDS U60.
The A2 incandescent beam is roughly similar to the E2e, but a little oval. The E2e is an amazingly compact light, so be advised the A2 is somewhat longer, but still quiet compact. To me the A2 has better balance/feel than the U2.
I strongly recommend the A2, with the caveat that it won't win any white wall contest of beam pattern beauty. However it does "get the job done" in a very practical way.
I was surprised how useful the A2's LED "low beam" is. It's quite bright, and very broad. It's perfect for close range tasks, even in the daytime. The spillbeam edge has an uneven "biohazard" pattern, but you normally don't see that, the spillbeam angle is so broad. The LED hotspot is also very broad, smooth and even, and somewhat blueish on mine. It's sort of like an Arc AAA-P, but 3x as powerful.
Assuming my HDS U60 is truly 60 lumens (they're individually calibrated during mfg), comparative lux meter wall/ceiling reflection tests indicate my A2 is about 75 lumens. Measured similarly, my U2 is about 2x the U60, in theory 120 lumens.
From a throw standpoint my U2 still out-throws my A2, which is different from flashlightreviews.com's test results, but maybe my U2 is exceptionally powerful. At 25 ft (7.62 meters) the beam center lux of my U2 was 35 lux, whereas the A2 was 26 lux, and the U60 was 18 lux. The A2 incandescent beam color does aid target recognition in some cases, but my U2 still wins through sheer output.
The dual-method A2 high/low switching is very nice. In some ways it's easier than my U2, which requires turning the selector ring to change brightness.
Judging the A2 by numbers alone is misleading. It's not particularly outstanding in throw, run time, beam symmetry, etc. However it combines various features in a remarkably useful package. But it can take some usage before you finally grasp that, so I understand how people buy the A2, then quickly become disappointed and sell it.
My main problem with the E2e was it's just too bright for many tasks. The A2 solves that plus adds regulated incandescent output which doesn't dim.
Unlike the U2, the A2 has two totally different beam patterns -- the LED beam pattern is very broad and suitable for short range tasks. The incandescent pattern is more narrow, which throws better. By contrast the U2 can adjust brightness, but not beam angle. The two different beam angles makes the A2 very flexible.