@soix - Really, Part Time Audiophile as an example of good reviews? Their stated policy is to NOT publish a bad review. The puff pieces I’ve read on their site goes far beyond hagiography and would make even the most shameless fan boys blush. No measurements at all. IMHO, that site is the biggest joke of all reviewers.
@ghdprentice - I respectfully disagree that it would be in no ones best interest to publish a bad review. The purpose of using measurements should be to confirm the published specifications are accurate; what we are witnessing now in the absence of verifiable measurements are wild claims by mfrs that defy logic and known principles of physics and electronics without any accountability for stretching the truth,or in some cases, just making things up out of whole cloth. The turntable industry is especially rife with this problem exactly for that reason: no independent measurements. The major magazines apparently have testing capabilities as they do very analytical testing of amps and speakers but for some reason, they take what ever specs the turntable mfrs publish as gospel (they do add a disclaimer such as "according to the mfr, blah blah blah" which they assume gets them off the hook). I think what is needed is to resurrect the Consumer Reports model where the reviewers do a complete tear down of the product to comment on its construction, capabilities and deficiencies including detailed measurements of its performance as well as operational and listening tests.
I doubt that will happen. In the mean time, a major "tell" for me is how a mfr responds to questions about their claims; if they are transparent and engaging, especially if they provide actual measurements, I have more confidence in their specs. If they deflect or hide behind "we only care about how it sounds" or "it’s secret sauce and we can’t tell you" then one has reason to doubt what they say.
Another way to look at it is this: If a mfr publishes a spec and it is reasonable or close to the median for that type of product, it shouldn’t draw suspicion and shouldn’t be difficult to prove if challenged. But when a spec is orders of magnitude better than anything else in its class, it begs for an explanation. A mfr should WELCOME any challenge as a chance to prove it and draw further attention to their ground breaking product. Making outlandish claims then running away from anyone challenging those claims is sure sign that something isn’t right.