Hard for me to believe that Steve would say there's no benefit if there is one. He does recommend hi-end cables in other applications.
If I were you I'd borrow a cable or get a dealer to loan you a demo before putting out the big bucks for a high-end one.
In any case I'm not sure how much the experience of others will help you, as the results of cable switching seem to be system based. In other words, YMMV.