I switched my 180g from 4 MH (2 @ 250W & 2 @ 150W) and 4 t5 bulbs to 2 of the 32" Reef Breeder Photons and they worked great. I had them for 5 years and the tank was a mix, but mostly sps and lps. But 78 months ago the 180g sprang a leak.
My new tank is a 5' 125g and the 32" fixtures don't fit the new length. One isn't enough and two are longer than the tank. So I got a new 50" Photon V2 which is MUCH nicer with 6 channel color control, sunrise/sunset control, super slim modern looking and probably will 2 will cost you $1150 vs $1800 for two AP700.
Have you looked at the ReeFi-Lab.com led pendants? You'd probably want 3 at $300 each. I just put one to use over my 2'x2' frag tank and I really like it. A real glass lens that is adjustable focus, Cree leds, a controllable fan and very good software for color control and timing. It's new to me, but I'd say it's really worth a look if you like pendant light fixtures.