If you like bench stone sharpening, you should get all 3 spyderco stones. The sharpmaker coems with the medium and fine triangle stones, but in the bench stones you can get ultra fine too!
The 204 will give you much versatility, but versatility is only good if you will use the features. If you are a bench stone sharpening type of guy, DMT or Spyderco ceramic are the way to go, in my opinion. Either choice you make (bench vs. 204)you'll be happy with.