Between all the people I do know that played in the NBDL, to me, it is a toss up between Skip and Bobby Simmons. Skip was my man during that playoff run the Magic had in the 2009 playoffs. I honestly think if Nelson hadn't tried to rush back and play in the Finals, the Magic would have been more competitive.
Bobby Simmons used to get his man with the Clippers. Then he got paid with the Bucks and I haven't heard from the bamma since.