Determine what Stingray you want. One or two pickups, 2 or 3 band eq, four or five string?
What are you going to use it for? Who plays a Stingray you like?
A US Ernie Ball Musicman Stingray will be made in San Luis Obispo and it will say so. All of these will hit the same ballpark sound wise thanks to the humbucker in its classic position.
Refinement comes from having alnico or ceramic pole pieces and the 2 or 3 band preamp.
Sterling By Musicman, SUB or OLP are different instruments with different electronics and places of fabrication. These are outside of your scope if you want a 'real' ray.
Stingrays are not as massively modded as fenders, mostly it's about replacing the nut if you can't cope with the G being a little closer to the edge of the fretboard.
So, whaddayawant?