Hope it works out well for you. My grow space is basically 4x6-8', depending on how many plants I have going, a bit larger than what your using now and my lighting is pretty strong during flowering so the small red bulbs didn't have much of a chance.
I have a ton of information on how to compare grow lights if you're interested... all about spectrum, PAR, PPFD, etc...how to chose what works best for a specific sized grow space.
I won't get into manufacturers but you can always look at reviews to get an idea of what folks think.
I'd only look at manufacturers who will provide you with a PPFD map at various mounting heights above the canopy_ its really the only way to determine how much PAR every sq. foot of your canopy will get.
Watts don't really tell you much, except how much power they draw. In most cases the more watts the more light, but light intensity can fall off pretty dramatically as it "fans" out from the area directly below the light path.
Some manufactures only provide spectrum and wattage, some also provide PAR output, but then that is relevant only directly below the light at a specific height. You really need a PPFD chart and map to see what's really going on. A PPFD chart for different mounting heights will also tell you how much penetration falloff there will be from the top of your canopy downwards into the plants. Happy growing!