Here is the most comprehensive review: https://www.musicradar.com/news/guitars/review-the-beatles-remasters-1963-66-219124
Seems the general consensus is that for the first few albums (Please Please Me and With the Beatles) the mono set sounds better except for one or two tracks. But from 1964 on stereo is the way to go. (Thought there are moments on the each Stereo album which loose "something" sonically which was present either in the MONO versions or subsequent remixes like the 2000 Yellow Submarine album remix).
Seems the general consensus is that for the first few albums (Please Please Me and With the Beatles) the mono set sounds better except for one or two tracks. But from 1964 on stereo is the way to go. (Thought there are moments on the each Stereo album which loose "something" sonically which was present either in the MONO versions or subsequent remixes like the 2000 Yellow Submarine album remix).