I mention this in another thread a couple of weeks ago.
It really comes down to what your expectations are for a PG in the NBA.
Do you want a scorer? A faciliator? Pass-first, defensive PG? A slasher?
Rose, CP3, Deron, Rondo, Westbrook all bring different things to the table but are all listed as PG.
What exactly do you want out of your PG? It's about your cup of tea.