Trunk, out of the three lights you mention, only the E2e will fit comfortably in a pocket.
You might already have realized that the consensus here at CPF is that the E2e is a damn good light. Well, I got mine a couple weeks ago and I can tell you that it is! In fact, I doubt you'll be able to find a single critical voice here, and that should be worth something.
However, before I received my E2e, its highly acclaimed status around here actually made me a bit suspicious: no light that size could be that good, and I seriously doubted that it would live up to my skyhigh expectations.
I was wrong! I can't remember having been so impressed with anything I've bought without actually being able to hands-on test it beforehand, ever. It is a truly amazing light.
I have since downloaded the 2003 SF catalogue to have a look at the rest of the lineup. Among other flashlight needs I've come up with since becoming a flashaholic, I definitely need a hiking light: something fairly small and light, yet shockresistant and truly waterproof, with lots of lumens and more convenient filter covers than those avilable for the E series lights. The light that best fits these requirements (and my wallet) seems to be the M2. On the other hand, people's opinions on this particular SF light differ a lot more, as should be evident from some of the above posts. Whether it is worth the money or the size, etc, I cannot say, yet. If you do get it make sure to post a review here! Just don't count on it as being pocketable.
In fact, as much as I love the E2e, I see the need for an even smaller EDCOB (EDC on body) light. This is why my next purchase is likely to be the E1e/KL1 combo. Perhaps you should add that to your list?