600 or 1000w HPS

OK, 6 plants keeping them at 3 to 4 feet how much light should i give them? is a 1000 worth it? the higher bill ? i know rule of thumb is 100w per plant but this will be my first indoor setup and would love your feedback Thank's.

how big is the room?

its 10x10x8 830 cubic feet spare room

for a 10 x 10 I would go for the 1000 watter,for the money you'll spend in the extra elec.,the benefits of harvesting a 1000 watt grow in a room that size are too much to overlook when deciding.Personally am building a 10x10x8 with a growzilla hood throwing 2 1000 watters at em,so it should be interesting for the both of us.....

WOW, my bro says more watts more weight? what do you think?

Indeed.If I've done all the math correctly,I should get 15000 lumens per square foot from the lamps and hood,which I will dedicate a 480 cfm fan for the cooling,we've tested at the grow room I work at and that mf is bright.6 plants(MxA)each yielded 280+ gr dry,10 wks 12/12.Thats when I knew...

Holy Shit Thats awesome! thanks for your time buddy.

Any time have fun on the grow!

yea went with 1000.