Aog I use a wired mouse for my desktop but a wireless mouse for my lappie. The Wireless mouse I use is a HP H1D33AA. This comes with a little USB receiver that is plugged into the lappie and has been a damned good wireless mouse.
I use wireless very similar to Togo (might be that one actually). They are much more convenient but they do tend to break more often but their ease outweighs that inconvenience.
If you are using your mouse to play games or do some precise job, you'd better use a wired one. because when doing such things,milliseconds and micrometers make a difference.
Using a wired mouse, you do not need to worry about battery life.
But if you want better mobility-means you want to use and move it easily, you can choose a wireless one.