who has the best recommended product reviews

Neil Gader and Jonathan Valin of the Absolute sound. Neil is especially helpfull when reviewing affordable products. See, for instance, his reviews of 13 power cords.
Jonathan is usually associated with high end products but if finds a really good bargain he will let you know. Two good examples of this are the Odyssey Khartago power-amp and the Magnapan 1.7 loudspeaker.

My vote goes to Anthony Cordesman, who has long been my "go to" reviewer. His "day job" is a senior defense analyst, which I think has contributed to his evaluative and reviewing skills. Kudos, Mr. C-

Our own Terry London (Teajay) calls them how he sees them. Very dedicated audiophile and reviewer.

I enjoy John Atkinson. Good bit of the techie measurement stuff over my head, but he gives reasons for his judgments, and is not afraid to disagree with other reviewers and be (somewhat) critical.

I'm not in the "audio mags suck" camp; they are entertainment, and one datapoint among many. With that understudy, I think they are both fun and helpful, when I'm in the mood.

John

John, I find Atkinson's measurements very interesting and valuable, as I did with those in Audio Magazine. I compare his test bench results with the subjective reviewer's opinion of the unit being reviewed, to learn what kind of distortion that reviewer likes ;-).