If you don't mind a cooltube... This is what I run. $164 from Amazon
http://www.amazon.com/Apollo-Electronic-Dimmable-Reflector-Hydroponic/dp/B00521B894/ref=sr_1_1?ie=UTF8&qid=1358957855&sr=8-1&keywords=600w+cool+tube
Comes with both MH and HPS bulbs
Peace and Karma to you!
Namaste!