I read a comment today that it's not just the guys at BA and other prospect ranking sites who are high on the Sox farm system, but that other team's GMs gush when they talk about the Sox farm system. Apparently, there is a lot to be interested in beyond Betts, Bogaerts, and Swihart.
While I'm on the topic of our farm system, to think that the Sox have recently graduated the above three, along with ERod, JBJ, and Vazquez, and are still regarded as having a very deep farm says a lot about what a great job Cherington did with it.
As far as whether Beane was fleeced in the Donaldson trade or not, I'm not going to get into a debate about it. Either way, that trade makes my point that the Sox won't necessarily have to give up one of those three players to get back a #1 pitcher.