How do you guys feel about this:

600W LED Grow Lights (Quad-Band) - China Led Grow Light,Led Grow Lamp,Led Plant Grow Light in LED Light

or this:

600W LED Grow Light /LED Grow Lamp/Grow Light (SP-ZB600) - China Led Grow Lights,Led Grow Lamp,Grow Lights in LED Light

or last but not least:

China 600W LED Grow Lamp. Shenzhen Manufacturer

Which one should I go for?