there are a few brands that make double ended halides (HQI) bulbs, which brand are you talking about? If you are asking in general if DE is better than mogul MH
than I would have to say that more people think that DE is better. They say that DE MH
bulbs are more intense.
I run Geismann 150W DE MH
14k and I like them. But I never used mogul based MH
so my opinion is biased.