The is a big difference though. Suter is better defensively, but Suter also didn't have the offensive help Kaberle had. I don't want to discount Kaberle because at his peak I think he was severely underrated, but Suter is probably underrated offensively. He isn't exactly underrated anymore (he's probably the worst kept secret in the league), but his offensive side would certainly hit a higher end potential on a more offensive team than the Predators.
Even if you think Kabby and Suter are different, dumbass is right. You pay for the extra 8 months you get in negotiations to resign him, which is a big difference between a 27 year old and a 34 year old. You get the 27 year olds prime (all of it), while you get the tail end of Kabby's prime.
And I don't know why everyone think's Letang is available. The Penguins have invested a large amount in him and he's showing them why. He is intergral to that squad. MPS wouldn't be enough at all. It would take an Eberle plus to get him.
Suter is the best bet you have at getting a top line dman PMD stud and you better believe that if you want him, its going to cost you a lot.