X - Folks who count the overall total number of decks.
Y - Folks that count only one copy of each unique deck they have.
Z - Folks opt to count based on how much space it fills.
How do you count your collection?
I'm Z type of counter because I don't know X and I don't pay any attention to Y.
![Wink ;)](./images/smilies/icon_e_wink.gif)