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A lot of those reflectors have the option of being air cooled too. Its usually a 4 hole vent on the top that you can put a small fan and duct on.
If it doesnt have a glass lens i wouldnt bother air cooling it because it wont be as efficient as with the lens. Nor are they as good as regular in line ducted reflectors.
And yeah the light pattern is better and you have more options. Some are for broad coverage and others are for more narrow but more intense coverage.