When I started growing, I used 1000w hps + 2x 400 hps over several plants.... in a perpetual grow... having plants at all stages at all times necessitated isolating a particular group to certain lights, so I began converting all hps to led, cobs, qb and whatever smaller lighting looked good when I was baked.
Year in, year out for over 15 yrs, I've gathered/collected several smaller lights, 75w cobs to 225w led to 150w led and 100w blurple.....They all have provided lots of burnable weed...
Recently I added a Migro Aray 2pro...isolated a particular plant...after 3 weeks, I'm astounded. It may be the strain or something but Migro has certainly gained a permanent spot.