My sits are 180mm.

My saddles are all Brooks: B67 and B68 (NOT "S-short")

Believe me, once you find a saddle that fits, it's miraculous! When you find the magic saddle that "disappears," your whole universe becomes a happier place. (I don't even have to wear shorts with chamois anymore) Buy a spare saddle when you find the perfect one.

BleeckerStreetGirl's experience is very similar to mine. (she also has 180-ish sits)