TA's the likely minute-loser, as many have pointed out. Does more shooting, less turnovers make-up for the loss in rebounding, steals, drawn fouls, and general defensive energy made by that switch?
As long as Doc is working 4 or 5 bench player units, I 'd prefer TA and Finley to Daniels/Finley. I really like the Nate/TA pairing. Their speed, energy and + rebounding are big lifts for a bench otherwise composed of slow and unathletic half-court types. Daniels is the type of player who can disappear with an all bench line-up, especially if he doesn't have a small guard defending him in the post. He's a much better player with passers like Rondo and Garnett who can reward his exceptional off-ball movement.
If we go to a pretty strict 8 man rotation in the playoffs, Daniels is probably the best option.