Overall, the commenters opined that the H4 was OK, the H4n was better, and the PCM-D50 was best. They were pretty much unanimous that the difference between the H4 and the Sony was as plain as day - compared with the Sony, the H4 was “muddy” or “muddled”, “disjointed”, “scrambled”, or slightly noisier; one commenter called it “not even worth talking about”. One guy even said he heard wow and flutter. There was general agreement that the Sony was clearly superior.
The only problem with all this - which another commenter soon discovered - was that Brad actually screwed up. Instead of pasting in the embed code for all three recorders, he pasted in the H4 code, then the H4n code… and then the H4 code again. He just labelled it as the Sony PCM-D50.