I mean I like Big Z for you, but between Big Z, Garnett and Camby you've got the same "fingers crossed" problem that Portland does..in that if any one of those guys goes down nobody else on you bench can even be a space filler.
Anthony Parker and Micheal Finely seem like they fill different roles to me. Finely is more of a sporadic offensive option, bordering on a one dimesnional shooter at this point. I also think playing Finley at the 2 against Brewer or Pargo is wishful thinking.
Parker is a viable 2/3, Finely is more of a 3/small ball 4..which you can run because Garnett is such a good rebounding presence.
I'm not sure comparing them directly makes sense, it would make more sense to compare Balkman and Finley..and in that situation I think Balkman plays better defense and hustles/rebounds better, Finley shoots better, but a lot better.
How many mins are you looking at giving Big Z in the playoff series against Philly?