I think "rare" and "best" don't always go hand in hand when saws are concerned.
I'd say that from what I've seen is that( 2 series husqvarna =aka 272xp ,288xp) , (OH series Stihls=044,064,and 028s) , and (10 series McCulloch =10-10S,Pro700,and super pro81) Pretty much define the 80s and 90s of...