i have worked in a theatre, and personally have used the lowest setting on the NDI and the LF2X, both work well. However they are expensive.
for lights to be lent out, Coin cell lights are too bright for back stage, or FOH work, and battery lives too short, so much that youre probably gonna have to replace them very often if its a heavy traffic theatre. i recomend these
http://www.dealextreme.com/details.dx/sku.2976
AAA multipacks are much cheaper, and you dont even have to use the good AAAs.
why i would reccomend this over the earlier mentioned light (
Check out this deal at $5.48 for 2. )?
is because this one only uses one AAA, so its alot more cost effective.
also, while flood is good in general, i have found that alot of flood in a theatre isnt good,espcially if youre working front of house, because you only need some light where you are pointing it, too much scatter may disrupt the other theatre-goers, and even distract the actors/actresses on stage. So you need a medium flood light.
use bulkrate when buying for even better prices.
Crenshaw