How many (and which) DS or DS Lites do you personally own?

[Hawk]

I have the regular DS titanium and my wife has the regular cobalt blue DS. But then the Lite came out. Now I also own a White DS Lite and my wife has a Pink DS Lite.
Having the four DS systems actually works out. Anytime friends are over and want to play some tetris or clubhouse games, we have a blast. And then, if I ever get a Wii game that can have 4 players connect with DS, then we are all set.