I'd pass on the nightstar - I have one and it's mostly a novelty. Once fully charged, its output is about that of a photon 3 set on low. An inexpensive LED loaded with lithiums would be a better long-term-storage ready-in-an-emergency light.

I can't comment on the glowstick you posted, but I just bought a pretty decent pair or LED glowsticks for camping with my nephews at Walmart. I think they were $3.99 each.

If you still want a Nightstar, I'll sell you mine cheap.