I've got a 30" AquaticLife T5HO with 4 bulbs and 2 lunar LEDs on a 30 gallon tank. I like it for the reasons mentioned earlier (single cord, integrated controller, etc), as well as the fact that it is pretty low profile. I had a piece of glass cut for the top of the tank and have the light just sitting on it rather than using the legs that come with it. Makes for a sleek look. I ordered it through Marine Reef on Johnson Ferry. They have other sizes in stock but didn't carry the 30". They beat any internet price I saw and gave me $20 in "fish bucks" to boot.