The double bright led will work for beginner plants just fine since it puts out lower light. You may want to check out the finnex LED fixtures as well. The fugeray has a lot of little leds which seems to eliminate any spotlight effect or dark spots, IME.
This thread here shows a lot of the different PAR values for many LED fixtures. http://www.plantedtank.net/forums/sh...d.php?t=160396