depedns what you want. madson's in more of a "long-relief" role, as in he eats up 1-3 innings in the middle of the game when it's close. this tends to put him in a position to vulture a decent amount of wins, and he's been pitching well lately. OTOH, gonzalez has a shot of closing for the pirates if mesa blows up. madson really isn't going to close at all.
i think i'd take madson unless you really wanted some save potential, or if it was a keeper (in which case, gonzalez is going to be a closer,a dn probably a pretty good one in a few years).
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