What brand of bulb works good with a 600w dimable/Digital ballast

I have a 600 w dimable/digital ballast. The guy who had it before me had some some unbrand name bulbs an blew shortly after i recieved them. So I'm thinking it wasthe bulb? So what brand of bulb should i buy? I was looking into InterLux they say something about being electronic ballast tested. please help! Thanx

Hi there i had the same problem about 3 months ago, and all i would say to you is when you buy your new bulb make sure its digital compatable, as i did nt relize that they have different bulbs for digital and magnetic ballasts. I went with philips in the end i think it was green power. Anyway i hope you sort your problem soon all the best Doby Mick