As of now the vote is split evenly, 8/8 on each side, after I voted.
I prefer the L4, and own the L4. The reason is rechargeable batteries, if I'm going to use a light a lot, it had better be able to take rechargeable batteries. I also have a requirement that if necessary, I should be able to switch back to primary cells. Since the L4 sits around the house most of the time, high beam only is fine, I like the Z57 clickie. You can add a low beam, but that sacrifices the clickie. It's also good to wear with a shirt and tie due to its small size. The L2 would be a bit too long, see below for the size problem.. /ubbthreads/images/graemlins/grin.gif
However, I would definitely want a variable power light as my EDC, because I find multi levels very useful. My pocket-carry light is the U2, nuff said.. thankfully I'm in jeans/cargo pants most of the time, only those have enough space for the U2!
So if I couldn't have my U2, I'd probably still stick with the L4 but I might be convinced to give up the Z57 and add the two-stage McE2S, simply because it is smaller than the L2 and takes rechargeables.
100 on high is not unrealistic, due to advances in LED technology. Even my L4 is somewhere in the 100 range, as is my U2, this was determined after comparing to known-105 lumen lights like the Surefire P90. The specs are just specs, take it as a 'minimum' of what you'll get, and hope you luck out and get better.