Kessil A500x or AP9x (No Hybrid) for mixed reef

[Neko]

Which one is better, one A500x or one AP9x?

My setup will be:
- Red Sea Reefer XL200 (24 inch length, 22.6 inch width, 21 inch depth)
- Mixed Reef - SPS on top (and possibly medium), LPS on bottom

No hybrid. I know BRS has successful SPS dominant with A360x + T5 hybrid. I cannot do DIY. I want to have simple setup (good balance of look and SPS growth). Any advice please?

 

[Montiman]

I have 2 9xs and really like them. I would do 1 9X for your tank. I think you will be happier with 2 pucks reducing shadows as compared to the single point source light.