Thought I would elaborate a bit more on my opinions. Kemp is a risk/reward guy. We have seen what he can do when he's healthy but we have also seen the other end. If you believe he can stay healthy he is a 5 tool guy that can help you in every single category, thus making me lean towards him over votto.
The exact same thing applies with cargo but it is a bit closer, but the 5 category potential that cargo provides is something that I just can't pass up on. You can't go wrong with either though.
In a vacuum (and in the long term)... I think I would stick with the 2011 rankings....Kemp, Votto, CarGo. I might adjust that depending on your roster needs and # of keepers...if you have a top 1B you are already keeping and you get more than 2 keepers...then I would take the two OF...both are studs.
I'd take Votto, then Kemp, then Cargo. I feel like I know what Votto will do, Im not sure what Kemp is gonna give us this year. If he doesn't run, he's not up to par with Votto IMO. Cargo is great, but his splits makes him 3rd in my book. And I will say I'm nitpicking here. All 3 are studs and you can't really go wrong with any of them.