The wholesale type that deals with tradesmen(they'll often help you out). I'm always amazed at the high quality parts that my plumbers bring to projects. Way better than hardware store plumbing parts.

Or maybe online you could find a 2" basket for a high end sink that could be better quality. There are less options for the 2" baskets where as the 3 1/2" has all different styles and qualities. I have an old slate sink in my kitchen with a 4" which I hope never fails.

But that you can replace it easily, would be good enough for me. They don't take all that long, cheap $.