Shunyata Power Conditioner advice

I have noticed that a number of well respected reviewers have Shunyata Power Conditioners in their reference systems. The reviews are quite glowing. In some cases the reviewers list two seperate conditioners within their systems; I assume one for amplification and one for source components. In Robert Harley's case, for example, he lists both the Hydra V-Ray v2 and the Hydra 8 v2. My question is this, "would you use the higher quality V-Ray for source or amplification?" My assumption is that you would use it for source?