I've got one of those PEQ boxes. The light is OK but the LASER runs off the same battery so if the field you play on says no go you'll be up the creek.
This style of light works really well but it can be akward if you plan to use it not mounted to a weapon.
http://www.airsoftparts.ca/store2/in...roducts_id=323
This is a hot light too, but wrecks your budget and that's before the tape switch and weapon mount get in the mix.
http://www.airsoftparts.ca/store2/in...oducts_id=1505