These cobs are so powerful and effective that I quit arguing with people over whether it was a good investment for new growers. To be honest I really can't help chuckling under my breath watching as people defend their lighting choices. I was myuch the same but I came around to the truth by observation. So I can understand other kindred spirits needing to see it for their self. I did. Now it is lots of cobs spread out for even light and the resultant growth is simply stunning.
Somebody with too much time on my hands (that excludes pop22 and smo) should set all these different systems up side by side and do a mapped chart reading. They do these all the time already but no one seems willing to believe science.
I don't have Autocobs, but my DIY's are similar in scope and even with my lesser systems I can tell you these things grow STRONG plants. buy em build em or watch from the sidelines. You can do the same with many other lights, but good luck doing it at this price point.