The top two shortstops, Correa and Seager, both have problems with durability. Both are going to get 8+ years for huge money. The next tier - Story and Semien - will be be a little cheaper (although still expensive). They have been more durable but aren't as good and Semien is over 30. I won't mind if the Tigers take chance on any of those guys, but if they are going to spend like a middle market team, the latter two make more sense. Baez scares me with his ridiculous strikeout rate. Simmons is going to be 32 next year and I would stay away from a 32 year old defensive specialist.