You can't really compare Finnex and Marineland/BeamsWork. The only similarity: both products contain LEDs.
Something missing from this discussion: the dimensions of your tank. What are they? A BeamsWork fixture could be perfect over a shallow tank. A Finnex fixture (depending upon the one you choose) could be perfect over a much deeper tank. What lighting level are you going for? What plants will you keep?
I'm going to go with a Mr. Aqua 12g long.
Plants will be a Christmas or flame moss wall, and a complete carpet of dwarf baby tears (for a few months, then who knows).
The only thing that has stopped me from purchasing it is finding the right lighting. I've gone through many 12g long threads, but nothing is conclusive. And if I could save $50 buying a less popular light that is just as good, that would be great.
Since you'll be low light, here's the skinny on those BeamsWork/Marineland fixtures:
If you want low light, the Double Brights will have to be 7 or 8 inches above the tank.
If you want to use the regular/Single Bright and rest the fixture on the tank? Definitely get the cheapest one. You'll be just fine going that route.
I went with the Double Bright because I wanted something suspended above the tank so my view inside it isn't obstructed. Also allows me to lower it if I want more light and ever decide to use CO2 or ferts.
With a tank that shallow and not hanging the fixture, that single bright is probably fine then. It's not as "good" as the Finnex Fugeray but the Fuge will be too much light without CO2. I doubt you will have much success with a baby tears carpet but keep us updated. Mosses and low light plants will do fine, though.
Then you've won 3/4 of the battle. Dwarf baby tears is CO2 intensive in my experience. I would do a dry start with the baby tears using Amazonia or other nutrient rich substrate, let it spread nice, and then when you flood it just crank up the CO2 for the transition. I had good luck with baby tears using that method. After you get it established, the lower light should be fine. Baby tears maintenance is just high.