My heart lies with the -3 & -4s, I have 3 -4s and one -3, the -3 gets shot lots more than the -4s, but this is purely first come first served, the -3 was the first that I bought, the 2.5" & 3" -4s are NIB, the trailer is a -4 PP that is like shooting a 617, great guns!!
Here are a couple of mine, I've posted this pic before. It's of my -4 2.5" & 3". While the CS-1 is a great pistol due to the history the 686-4 3" is equally nice.
Cheers,
Sam