For me, if you can control the light very well in a room then plasma would be my only option. Some plasmas (particularly the Panasonics) have an anti-glare screen. Still not as good as a LCD's, but better than having a standard screen. Even though LCDs are getting better in PQ, I still think plasmas have better detail (especially with blacks) and their higher refresh rate is a no brainer for the sports fan.
EDIT: (just seen T7's post). I have to agree about 1080p vs 720p. I have a 720p 50" plasma. Mine was about 1600 when I bought it. Now you can get one for about half that. If I had to buy a TV today, I would get the exact thing I have now and save my money.