If the frets are dressed, leveled and crowned properly, then the set up, and buzzing, are determined almost exclusively by neck relief. If your 2K bass is buzzing as you describe, then either the neck is misadjusted or the fretwork is faulty. There's the nut to consider also. The gauge and height of the fretwire is of no relevance to the equation whatsoever, so long as the right relief, nut height, and fretwork has been done.