I've not used RYM before, but a quick glance suggests that Bowie's "Low" is rated higher than "Hunky Dory" (albeit marginally), which I find staggering. All in the ears of the beholder, I guess...
I agree with you on that. I am a massive Bowie fan. But I would disagree with RYM and say the best albums were Space Oddity, Station to Station and (dare I say it) Young Americans!
For me it would be Hunky Dory, Ziggy Stardust, Diamond Dogs, and Station To Station. Heroes is a great half-album (I skip most of the instrumentals with the exception of "V2 Schneider").