How Many Plants Under 2 X 600 w/ Wide Reflectors?

Hey guys,
i know this is a question in which most will have different answers but just wondering if i have say 2 600w Lamps with Large Xlnt Quality Reflectors, How many plants could i have under them?

My mate grew around 33 small plants very easily under 2 with the medium reflectors..

Thanks for ya input

6-8 at 4/5 feet tall, around 24 at 2/2.5 feet tall. As you prolly remember I have 2x600 w/4 foot hood's.:thumbsup:

Dive:stoned: