Buffalo's D hasn't looked that stellar in the last few games,.... So while guys like Jagr, Alfie or Kipper might be more valuable to some other teams, Chara would provide the best option for the Sabres, IMO.
For the Nucks, I'll take Foppa (why do you think Sweden won a goal medal?) and Kipper (as much as I hate the Flames, I can't deny that this guy is amazing). Just those two players alone can get any team into a conference finals at least.