You can hear a more drastic difference with their earlier albums (Please Please Me and With the Beatles) between mono vs stereo.
The only later remastered album I have is Abbey Road. I can tell a slight difference, but not so much really.
So far, I have Please Please Me, With the Beatles, A Hard Day's Night, Beatles for Sale (haven't opened yet), Abbey Road, and Past Masters.
Target is running a good deal -- $13.99 per (exception being Past Masters and White Album, being $18.99), but when you buy two, they give you a $5 gift card. Works for me.

