Lotsa DIY builders get caught up in the "max efficiency" of the whole realm. I don't disagree that it has purpose, but when we're talkin' about 3x3, 4x4 areas, who FN cares if I coulda had an extra 4000 lumens??? The BXEB is a workhorse emitter, for bargain basement pricing. Although, my biggest VEG "lamp" is comprised of Samsung F-series, but those klick ass too....
I've said this before, so I'll say it again, with pride.
I am, THE, consummate Bridgelux EB series fanboy knobjockey.
Most of my EBs have likely been attached to 3-5 different frames during their service in my operations.