I like to switch it up. I use nub/touchpad/mouse for doing different things. I have the newer basic USB optical microsoft mouse that is small enough to throw in my bag and not be a pain. If I plan on being on my laptop for more than a half hour or so, I'll prob plug it in, and use it half the time. Its a good idea to keep a mouse around incase you need to be scrolling through long documents or fast clicking (video games :-D)