Myself I'd have to go with the E2e, mostly because I like the idea of the pyrex lens and I like the stiffer clip. Also the lock out tail cap and better seals are a huge plus. (However I hear the new E2's come with them as well so that's not a factor if your comparing new E2 to new E2e. I like the anti-roll bezel, just in case I want to remove the clip.
It had been awhile since I had handled a E2 and I'm again amazed at how much they put in a such a small package. Even comparing it to a 6p it's just so much smaller. I'd much rather carry my E2e than even my 3P. Getting as much light and as smooth of a beam out of that small of a bulb reflector is quite a task I'd imagine, and they did it very well.
So I've added a E2e HA to the 9p, 9AN, and 3P. Of those the only one I've been even slightly unimpressed with is my 3P and that was a real dissapointment to me. 15 lumens just isn't enough, and it's a tiny spot and little area light, 30 lumens while harder on runtime would have been more useable for me.
I doubt you can go wrong with either the E2 or E2e, but myself I liked the E2e better.
Todd