Which one is most useful?

[chew socks]

First i have to ask if the Zebra light H-50 has a key ring on it so i can use it as a key chain.


If yes then replace H-30 with H-50 below.
Okay here are the options

Glo Toob lithium (anyone know if it can use 3.7 volt rechargeable)=would be useful if i take a night diving class, which i'd like to do

Zebra Light H-30=seems useful cause pretty bright

Two of these dive knives as a backup to the one i have=i like knives http://www.scubatoys.com/store/detail.asp?PRODUCT_ID=ScubaMaxBCDdiveKnife

Or a tritium key chain=who doesn't want a radioactive key chain http://www.dealextreme.com/details.dx/sku.6830

 

[Fallingwater]

As far as I know (I don't own one) the Zebralight has an exposed emitter, and as such is not suitable for keychain use. The keys would scratch the LED to hell in very short order, unless a protective... something... was installed.

 

[richardcpf]

The lithium gloob is too fat for a keychain light for me... I use a L0D, Never fails.

If you dont mind getting a cheap light as keychain, get a DX fauxton. (10 pack for $4) as bright as a E01.

I got one of those tritium bar from DX, pretty useless. You wont notice it glow unless in complete darkness.

 

[Sgt. LED]

Unless you already have another headlamp I would have to say that the Zebralight H-30 would be the most useful thing on the list. Not really for the keychain however.

 

[Gunner12]

The H50 doesn't have a keychain hole but the H30 does.

The H30 and H50 have a lexan polycarbonate lens. The LED's dome is protected. The H30 has a ride around the lens to further protect the lens.