Track pads are inconvenient for desk work, in my opinion. This is my mouse/keyboard set up:


You can't beat those portability-wise. The receivers never come out of my laptop because they're so tiny, and the keyboard never requires batteries and as a result, it weighs under a pound. The mouse is amazing, and works on any surface. I've used it on my lap, on the armrest of my chair, on my bed, anywhere - it's extremely precise. The keyboard allows for insanely fast typing. You can press any number of keys simultaneously, they will all appear on screen. This means gaming is flat out better, because while not all of us are 100+ wpm typists, anyone that plays a game knows how important it is for a keyboard to be able to register as many as 5-10 keys at the same time.
For designing, I have to admit I can do much better work with the pen tool for vector graphics via touchpad, but right now I am saving up for a tablet to take my work to another level.
As always if you are using a keyboard/mouse for a laptop you have to make sure you disable your laptop's touch pad to ensure true precision.
Right now I have my laptop connected to my 24" HDTV along with my Xbox. It's amazing being able to do everything in one place, and to switch from gaming to browsing to movies within seconds. No more desktops for this guy!
