I can't stand the touchpads. I'm constantly moving the mouse by accident because of my fat hands.
On the other hand (no pun intended) I love the trackpoint. So much so I spent 99 bucks and bought a keyboard from Lenovo that is the same keyboard IBM fits in their laptops, only in an external light weight keyboard that plugs into the usb port. Has both the trackpoint and touchpad.
The thing I love most about the trackpoint is that I don't have to move my hands off the keyboard home position to click something. Very handy when I'm coding. Fell in love with it back on my old IBM laptop, to the point where I seldom bothered to plug in an external mouse.
I love the keyboard so much I cart it back and forth from work to home. My one issue (and if someone knows a solution PLEASE let me know) is with my HP laptop.
Seems both my laptop and the Lenovo / IBM keyboard both use the Synaptics drivers for their touchpads. So when I plug the Lenovo / IBM keyboard in, the keys work fine but the touchpoint and touchpad do not. I'd happily live without the touchpad, but the touchpoint was the main selling point to me. I've tried disabling the touchpads on both the laptop and keyboard (and both at the same time) but (shakes head sadly) no luck yet.
I'll never understand why more keyboard makers don't include touchpoints or pads in their keyboards. It always seemed to me on the split keyboards that area between the g/h keys would be a good place to stick a trackpoint.