It may come down to what you watch. Plasmas refresh rates are still better than led. If there are lots of sports in your viewing agenda maybe plasmas the way to go.
Before we bought i stopped in at visions to ask a few questions. They were slow so the guy set up the demo wall so I could see the difference between the refresh rates myself. Learned alot in that 20mins. We ended up with a Samsung 55"led due more to the lighting conditions and viewing angles in the family room.