All the people Ive talked to around these parts suggest going with General Electric, at the electrical wholesaler they're about 18 bux CDN as opposed to the grow store brands which are around 55-70 bux. I'm not an expert by any means but Im using the GE and my plants are growing quite nicely, also you can replace 3 of them for the price of one of the grower brands...Im running a digital 400w ballast and no probs so far. Guess it boils down to budget and what knowledge you can gain from people with more experience, this is just my 2 cents worth. Good luck with whatever you decide!