Hortilux and Ushio are considered top grade lamps.

Ushio is probably better for digitals.
Dutch Pimp Reviewed by Dutch Pimp on . Best bulbs MH and HPS digital ballast After several grows using cheapish bulbs I think its time for a change but not sure whats even out there in terms of a good 600w MH and HPS. Just found out that all the cool kids seem to be using ceramic metal halide's but this is not an option right now as I just purchased a digital ballast (before reading about ceramic's, typical me) My current lighting patterns in a grow is veg with the MH(20 hours per day) and flower with the HPS(12 hours per day), Im not entirely happy with the Rating: 5