There is nothing else on the market that compares to the PFO or Reef Optix 3 pendants in terms of total light output. The RO3 actually gives you just a bit more light output, maybe 3% - 5%, but the light distribution is more of a square pattern. The PFO's light distribution is more of a rectangular pattern. I would recommend going with whichever one suits your aquascaping design the best. HTH