If you go for the base model 300’s you can get them for $66 each, the 600 is $160 so you save $28 with the 300’s. You’ll also get better spread with the 2-300’s than the 600. I’ve run both lights and the 300 is hard to beat. I just retired mine after 2 1/2 years of 20-0, 20-4,18-6, and 12/12 light schedules. All the lights still fire up on my 300, the flower spectrum shit the bed on my 600 after 90 days of 18/6. Plenty of people have had different experiences with the 600 but this was mine. I’ve tried a lot of lights, if I was going to grow with blurples, I’d grow with 300 watt Viparspectra and just fill out my space with as many as I’d need.