If you are very close to an attacker, the L4 might be more "blinding" than the E2e because of how white the light is. A guy at work was examing my L4 and accidently shined it in his eyes in a lit room. It sure startled him. He jumped back and yelled "what is this thing, a laser!" You do need something much brighter than either of them to stand a chance of stunning someone at any distance. The only thing I don't like about the L4 for SD is you have to make sure the batteries are good. Because of the regulation, you have no warning when the light is about to go dim, and when it does it's not bright enough to blind anybody
After I got my L4, I sold my E2e because I never used it. Then I thought I might miss out on the longer throw, so I got a Streamlight NF2 to replace it because it's even brighter. Still I kept using the L4 for everything and sold the NF2. Surprisingly, the L4 actually has a smaller hotspot, but the spill beam around it is brighter than the E2e which concentrates more of the light in the center. If you turn them on at the same time at short range the L4 makes the E2e look sick and weak. I was worried that it would be too bright for general purpose use, but it's not. I use it for everything and carry it everytime I'll be out at night. In spite of the larger size, it has replace my Arc LS for EDC. One other item; the L4 is slightly longer than the E2e.
Get the L4 if the money doesn't matter.
After I got my L4, I sold my E2e because I never used it. Then I thought I might miss out on the longer throw, so I got a Streamlight NF2 to replace it because it's even brighter. Still I kept using the L4 for everything and sold the NF2. Surprisingly, the L4 actually has a smaller hotspot, but the spill beam around it is brighter than the E2e which concentrates more of the light in the center. If you turn them on at the same time at short range the L4 makes the E2e look sick and weak. I was worried that it would be too bright for general purpose use, but it's not. I use it for everything and carry it everytime I'll be out at night. In spite of the larger size, it has replace my Arc LS for EDC. One other item; the L4 is slightly longer than the E2e.
Get the L4 if the money doesn't matter.