The Thriller B's comprised the Red Sox best defensive outfield trio in the past 50 years. Benintendi, Betts, and Bradley were a joy to watch in leading the '16-18 defense to three straight first place crowns.
My board name honors the '75 Sox outfield, which featured five Gold Glovers on the roster. But judging by what better baseball men than me have said (mainly, the actual Seventies Sox, themselves): Betts > Evans, JBJ > Lynn, and without a doubt, Beni > Rice. Through their careers so far, the B's are all positive dWARs; Rice-Lynn-Evans were all negative dWARs.
However, the '75 postseason outfield -- when a rejuvenated Yaz replaced DLed Rice -- was the equal of the '18 postseason outfield. Both gave Red Sox fans unforgettable thrills.