Don't go with Odyssea. I was looking at their product on ebay for $300 (new) with 2 MH
lights. Confused at the $500 under market price, I did my research and found a lot of complaints. Basically, I found out that unless you're handy with electrical and willing to upgrade the Icecaps and ballast and the bulbs it comes with, then go for it. Otherwise, just buy the name brand and save yourself the frustration.
I was going to get the 48" AquaticLife Six Lamp T5 for my 55gallon because I really wanted the moonlight LEDs, but it was too wide. Now I am going to purchase the Current Nova Extreme T5 light fixture, which is basically the same, just no built-in timer or moonlights.