You bought used lighting. That's the information you should have posted. I have sold those AI SOLs. As a matter of fact, I'm still a vendor for them and can get them wholesale. Meanwhile, I use the more reasonably priced units over my own tanks.
Of course it's up to the OP, but he should know all the facts.
If you want aquarium "bling", spend the extra money for all the fancy options. If you just want reasonably priced lighting that will allow you to keep any coral you want, go for the value fixtures.