I finally decided to re-complete the PowerShot ELPH Series, so few are missing from what I had that I thought why not.
The D20 and D30 only if I chance upon a cheap one, "N" the same.
SX series will see additions but I don't know about completing that flock. Maybe eventually... There shouldn't be more than a handfull and a half missing once I get what I intend to anyway.