A 48 inch Photon V2 is 220w, a Pair of Hydra 52HD is 240w total.
Since you are not running them at 100%, the difference may not be that big. The price difference is very big.
The Photon v2 comes with hanging hardware and legs, the Hydra does not, which also affect the final cost.
I can assure you that photon v2 is more reliable than Hydra52HD.