I dont have all of those but I have Black tiger, guardians, centurions, and split spades. I voted for guardians, but I pretty much like all decks equally, but for different reasons.
As awesome, cool, and elegant as the white Centurions are, my favorite deck is the Bicycle Guardians deck - and has been for a while. For some reason, I have an affinity towards it and its edgy design - and, in fact, I have a deck of Guardians in my hand right now.