Matt
I just found the Plasma to be a nicer picture to watch. You can go right into the techie side of things, but if you are looking THAT closly at the picture on your screen then you wont be enjoying whats on imho.
I had both the TV's running normal ariel pictures, Sky pictures and DVD pictures so i could do a proper comparison, and for me i prefered the Plasma.
I think it is down to personal choices in the end
As long as you dont get a rear projection TV you will be fine