Welcome to CPF, rev_jch!
That's a tough question as both lights have their strengths, potential disadvantages, and some compromises between runtime and brightness (can't have both!). Brigther incandescent lights won't have very long runtimes (typically around 45-60 minutes to 50% output).
Edit: I read "outdoorsman" on the the thread's title and immediately thought e2o. So, read this with a grain of salt, as a comparison between L1 and e2o (not e2L).
I very much like my L1 because of the 2 stages. I'm still on the fence about the tight beam. Sometimes I think it's great, sometimes I wish it had some more sidespill so I didn't have to "paint a scene" to see the whole picture.
A couple of reasons I'd favor the L1 over the
E2o:
- it uses only 1 battery
- it has 2 stages, making it very versatile for outdoors
- output is regulated (doesn't dim, like incandescent lights do, as batteries are exhausted)
A couple of reasons I'd get the
e2o (I have an e2e, for comparison):
- bright light
- decent "throw" and nice sidespill
- OK runtime (although it dims as batteries get used)
- its modularity with other Executive series parts (KL1, KL4, MN03, beam covers, beam filters, e1x body, McGizmo's Aleph accessories, etc.)
A couple of common reasons:
- small size
- bombproof construction
- SF's warranty
Is that clear as mud? Have you checked out flashlightreviews.com and theledmuseum.org for reviews and other lights?
Once you're ready, check out my CPF Specials thread - might save a buck or two in your purchase.
More edit, to actually answer the question:
The only KL1 I've used was ever so slightly brighter than my L1; beam patterns were identical, slight different tint. I still prefer the 2 stages of the L1 over the e2L (but you can get a 2-stage switch for it) and stick with the longer runtime.
Devil's advocate mode: get a headlamp.