You will find that most of the cheap LED
fixture skimp on the components inside. Some may be made with CREE but if they are not made with high quality waterproof drivers, sealed circiutry and/or gasketing you will not see the investment you made come out.
I lit a 20long with 2 of the Orphek PR25s and then upgraded to my corner tank and am still using them. I recently added a ML7 and think it's the bomb at night.
I am buying stuff for a 120RR I have in the garage and plan to build a custom hood and stand for.... I will be going with the Orpheks, no doubt in my mind.