ya i got a lot of time on my hands. so i figured out the stuff
Philips brand

250Watts 25 600 lumens 102.4 lumens/watt
400 Watts 45000 lumens 112.5 lumens/watt
600 watts 81 000 lumens 135 lumens/watt
1000 watts 126 000 lumens 126 lumens/watt

i'd go for 1 600Watt your going to see 21 000 lumens for only 100Watts more over the two 250w