I can only speak for Indianapolis, and IMO they were probably winners this off-season but it's important they be attributed nothing positive until on-field results are available.
I say that because it seems like a lot of the signings by Grigson were individuals other teams could have given money too but thought better of it. I'm talking about guys like Godser Cherilius and Erik Walden. It seems like the Front Office really likes these guys in the grand scheme for Indianapolis but everyone else sees average players getting more money than their worth. So I'm hesistant to say whether Indy was a winner this offseason, because of the negativity surrounding a lot of the guys Indy picked up due to the amount of $ Grigson paid them. I haven't heard anyone say the players outright suck, just that Indy paid them too much.
The reason I think they're winners though, is the fact that Indy is actually bringing in defensive players that fit the scheme. Last year Indianapolis was trying to play a 34 scheme with 43 personell. Freeney had a very quiet year and was unable to really get to speed in Pagano's D. Mathis had a solid year, but Indy didn't have the weight up front you need in your Nose tackle and defensive ends, and Zib in large part appeared to be a liability last year. So bringing in the beef up front with guys like Franklin and Francois (sp? out of SF), as well as bringing in a guy like Laron Landry, makes this defense look very different than the one last year.
Indianapolis also has the advantage that because they had so much money to spend this cycle of free agency, they were able to fill a lot of holes. Because of that, they should be able to pick up the BPA on the board when the draft rolls around and not have to reach for any specific position out of need.