Just back from Saba - my conclusion was that 10 days (8 diving x 3 dives per day) may not have been long enough! I know I was really not ready to leave.
Dived a number of sites multiple times - some as many as 4 times. I had no real problem with that because every dive is truly unique.
Only got over to one East side site - Hole in the Corner - seas were just a little too high most days to go over there.
There are a number of very good "shallow" sites, including Tent Reef, Ladder Labyrinth, Hot Springs, Customs House, Torrens Point, Babylon, Wells Bay and Johns.
Will be going back to Saba soon!