That would be the case if this guide was in fact impartial, but unlike what dogie says, by nature his relationships with manufacturer automatically makes his guide biased, whether it is done in a "transparent" way or not. Best to just move along and not pay attention to it, and hope that new buyers do the same.

In fairness it's all going the way of the dodo with so few manufacturers left, and no intention of producing consumer-grade hardware on the horizon.  Even if a company with poor communication, poor ethics, and at most an average track record came out with the latest and greatest hardware with any chance of ROI, everyone would jump at it regardless of what logic, this guide, or signs from God told them. I think Bitmain and others have realized this and stopped giving a f#@% about PR.