Vidic when healthy is a beast. He was our best defender when he came back. That was around the same time our defense went so many minutes without conceding.
I would take Vidic over Garay.
No doubt, he's one of the best in the world. But what IF he gets injured again like in 2011? You dropped so many points without him. Kinda like us without Chiellini, and we almost lost the title too. (which is why we're going for Ogbonna I guess)
Garay can be a VERY good backup at worst. Jones, Evans and Smalling will never fill Nemanja's shoes, imo.
And Rio is 34!