I have a mouse... standard rolly-on-the-desk kind XP I don't do digital art (besides spritework sometimes) because the only art program I have is MS Paint So really it doesn't matter too much for me anyway
Logitech optical mouse, specifically this one [link] but I hate it. >_< I like using ball mouses better. Less jumpy, as long as you keep it clean, and you don't have to recharge them. Never used a tablet before.
Devious Comments
I'm a big fan of my tablet, but there are some thing that my mouse is just easier for.
"Keep one hand on the mouse and one hand on the keyboard."
I follow it faithfully.