I, too, picked up Revolution in the Head thanks to the recommendation in this thread. I'm enjoying it very much, especially with the remasters on to accompany me. I'm with MacDonald about 75% of the time, though none of my disputes are major ones (I never outright LOVE any of the tracks he outright slags, though admittedly I'm only as far as Rubber Soul).
I'm occasionally unconvinced when he tries to take claim for something away from the person to whom it's normally attributed (he seems really hung up on the idea that George does not appear on "We Can Work It Out" at all, for reasons he can't seem to fully justify, and brings it up a few times). The oddest example of disconnect for me is "You Know My Name (Look Up the Number)", where he says that the voice of Dennis O'Bell is usually attributed to Ringo, but it sounds like him to George imitating Neil Innes from the Bonzo Dog Band, whose sound the track does in some ways resemble. But I've listened to it for many years and never has it seemed - and still doesn't - to be anyone but Paul, doing a standard lounge lizard bit. Anyway, the lounge lizard schtick in the Bonzos was entirely the domain of Viv Stanshall and "Legs" Larry Smith, not Innes, whose vocal stylings usually leaned towards McCartneyesque pop.
Minor quibble. I'm still enjoying it very much and likely wouldn't have found it without the recommendation here, so many thanks.