3 for me (Anita O'Day, my first, Gerald Wilson, and Crusaders). I also find them overrated, and in fact, I want to sell the Anita O'Day one (PM me if you're interested!). I just prefer individual CD's, where possible.
That said, I'm thinking about the Art Farmer set, having purchased three of his individual CD's, which I'm really enjoying, from Paul recently. What can you do.