first Hello and welcome! second, say good bye to your cash flow
I break it into a few of catagories:
5mm LED's:
photon and similar button cell lights:
+'s, very small, many are pretty bright for a 5mm light -'s, batt's drop off quick, not as tough and reliable as other KC
light's can be hard to find a battery(s) in "delieverance type" area's.
5mm 1XAAA aluminium lights:
+'s,super tough, easy to use twisty head action, bright like any well driven 5mm light, most have a boost and are regulated or semi regulated, giving a more constant level of light, can find a AAA
anywhere, even rob one from a radio remote or other electronic device that takes AAA's. -'s, most popular (and thus better value) 1xAAA's are type -III anodized, well machined, and cost in the $30-40 range. but worth it. they'll last forever.
Look at Peak and ARC models.
Luxeon light's:
An LED that is much brighter in general then 5mm's.
+'s, bright bright bright! till recently most were too big for KC use but custom
modder's have inspired companies to make production lux's for the masses.
Peak, Fenix, jil lite all make lux light's small and light enough to hook on your keys.
-'s, Pt#1: "The light that burns brightest burns half as long" to quote an old saying. A lux will not go for as long at full brightness as a 5mm. -'s Pt#2:
There are many battery option's,: AAA, AA CR2 etc. you will need to do some CPF data base searching to decide what is the minimum and maximum runtime Vs brightness you want, the size and weight you can live with.
that should get you started. have fun here, cause you'll get "hooked". and it's sorta like "hotel California" you can check out any time you want,,, but you can never leave :naughty: ......... VDG