Cree CXB3590s have a good reputation, capable of 1g/W yields without much experience. The 3500K spectrum is perfect for full cycle growth. Dims down to zero, so you can save electricity on seedlings and vegging.
Great for maxing out small areas.
Has passive cooling pin heatsinks, and uses an efficient HLG-240H-C2100B, 80cm x 20cm.