Well if you can find your nirvana I'd appreciate the details... we'll see what others make of it..I'm not sure there are any typical cars..all the ones I advised buyers on where less than perfect in most cases.. PeeblesZ4 is the master of buying immaculate E89s..A 12 owner car with obvious bodges might not make the best case study - no?
A typical car, with typical ownership pattern & issues would surely make more sense in an authoritative book.
As with anything, there will be the very best (1 owner, meticulous maintenance, no failures) all the way to the biggest ratbah cars.
Something in the middle feels more measured IMO.