I agree on Garson when he solos on later songs, but for the early albums I think he fitted quite well, or I'm just acclimatised.
Where to start with the Grateful Dead? 'Blues for Allah' is due in three years - might be your cup of tea as there's some unusual time signatures. Or the lush backings of 'Terrapin Station' maybe. Then there's the rock phase of the early 80's and 'In The Dark'.
Am avoiding the Freddie movie, after seeing the clip set in the 70's where he's got the 80's moustache going. That sort of anachronism would wind me up :)