The 2L has a considerably tighter beam than the Rage or even the Surefire E2. The E2 has more lumen output, of course. I haven't tried an E1 so can't comment.
I tried a Rage in the store and didn't like it that much. It felt kind of oversized and awkward. I bought its little brother, the 2AAA-powered Blast, instead. I like the Blast a lot. It's got about the same output and beam width as an Arc LSL, but it weighs and costs a lot less, and you can get batteries for it anywhere.
From what I've heard, the Rage and Blast have about the same hotspot brightness, but the Rage has a wider beam, sort of like the Surefire P60/P61 situation. I didn't check that when I tried out the Rage, though.
The E1 seems like kind of a silly light to me. It's a lot more expensive than the Blast without being all that much brighter, and doesn't really weigh less than the UKE 2L though it's a bit smaller. I'd say if the Blast isn't bright enough for you, get the UKE 2L or the Surefire E2/E2e.