I am running my two 1000 watters 24/0. But there are lots of factors that go into that. I am also running dwc hydro and have complete evnironmental control so they can actually use all of that light. If you are growing in soil most folks here go 20/4 but I have seen lots of 18/6 auto grows that produce large sticky nugs. It just goes to show that there is more than one way to do something.
As far as the Super Autos, yeah Dutch Passion pretty much has them locked down with the Trificeta of super autos in the AutoXtreme,AutoUltimate and AutoMazar(and soon to be added I am sure the BlueAutoMazar) I looked at the Heavyweight Fast and Vast as well but just couldn't find enough grow journals with them so I am excited to see another F&V grow journal because I am sure I will probably try them at some point. At any rate good luck and I am sending good grow Karma your way