Here is why I thinking about changing from 3 x 250w MH Radium Lamps
(Which are awesome)

5 year investment for 3 x 250w MH with Radium

Lamps per year $240 x 5 = $1200
New Lumen Max reflectors $145 x 3 = $435
New 250w Ballast = $120 x 3 = $360
Electrical Cost per year @ $.10 a KWH $301 x 5 = $1,505
TOTAL $3,500

5 year investment for 6 AI Blue Sols

Fixtures $2,560
Electrical Cost per year @ $.10 a KWH $137 x 5 = $ 685
TOTAL $3,245