You dont really need copius amount of light if its FOWLR. What corals are they? How long, and how deep is your tank?
Both of those would be good if you eventualy wanted to go reef. IMO, both are good. Heating would be an issue in those MH pendants, so thats something to keepin mind. The MH unit might be too small, with only two 150W fixtures, but you wont need anymore than that if you dont plan to go reef.
HTH.