I know that Perk is a very good defender and that the C's haven't lost with the Starting 5 of Rondo,Ray,PP,KG,Perk , but Perk isn't going to be full healthy ( probably about 75-80% by the playoffs).
To me Shaq fits in so much better with the Starting unit than he would with the bench. KG and Shaq seem to work off each other very well with Shaq controlling the paint and KG defending the pick and roll and perimeter. They are also a good inside/outside combo on offense.
Rondo and Shaq also seem to have really good chemistry and is part of the reason why Rondo is averaging 13 assists per game this year. Rondo can penetrate and draw the defense and then just lob the ball to shaq for the dunk. There is no way that Perk can do this ( especially coming off an injury).
I think Perk fits in perfectly with the bench this year. There will be plenty of scoring with a lineup of West,Nate, Daniels, BBD. I like the combo of Perk and BBD being the big men coming off the bench. They will absolutely eat up 2nd string big men they go against and it will allow Perk to come back slowly and not play to many mins as a starter.
I don't think Shaq would be nearly as effective without the big 4 freeing him up to score easy dunks and put backs. At this point of his career he needs to be set up because he does not have great low post move or athleticism that he once did.
Also add in the fact that Shaq can get the opposing teams in foul trouble early in quarters, I think it is a no brainer to stick with Shaq as the Starter.
So who do you guys want to start ?