At the company I work for everyone gets a MagicMouse. The pattern is that after 2-3 months of usage everyone gives up and switches to one of those Logitech MX mouses - so did I. MagicMouse is so goddamn uncomfortable to use if you ever touched a good comfortable mouse. It is now resting in the back of my shelf.
I ditched it too but for the track pad, I seem to be in the minority here but I find the MacBook pro track pad more than enough for navigating the OS and only really falls short for gaming.