I was recently wondering which cymbals in my setup are simply irreplaceble and found that no matter what I will never get rid of my Paiste 2000 hats and my 20" swish. The hats because they not only sound great but they are also a collectors item

(well at least I'd collect colorsounds if I had the money to do so), the swish because it has that one of the kind sound - just right.
Imagine you have to sell all your cymbals for whatever reason and you can only spare three... which would you choose and why?