If money is no object, here is the summary of priorities:
First off, LED televisions have extreme performance benefits over regular LCD.
They are not only thinner and more aesthetically pleasing, but the LED lighting method significantly improves black levels, side-angle viewing, and contrast. The picture itself is much more even and beautiful across all angles as a result of that, as opposed to regular fluorescent-lit LCD, which still has really great picture, albeit with slight color bias when viewing from an angle (the less perpendicular to the television, the worse the picture gets).
The second highest priority is the refresh rate. 60HZ is ideal for enjoying a movie or TV show. The more fast paced the action, the better the viewing experience. 120HZ is good for sporting events and casual gaming.
OF NOTE: I recall watching a BD of Transformers 3 on a 42" Visio on 1080p at Costco. I recall that at times the video was clearly in sync with the 120HZ and the picture was noticeably smoother, while most of the time it was out of sync and played like a 60HZ video. The fact that it jumped between the two was a real bother for me, however my friends did not notice that. Still, though, because of that one event I have decided that when the time comes for a new TV, I will make sure it runs at 240HZ to prevent that out-of-sync bother from ever happening to me.
That aside, for any hardcore media consumer (you watch TV a lot and enjoy the quality, and you play a lot of online games), 240HZ is definitely a MUST.
Also, if you're planning on buying a television now, I suggest future-proofing it and making sure it is 3D-capable, at 1080p @ 240HZ. Lots of movies are coming out in 3D BD now, while the number of games supporting it is growing by the day. Make sure you consider that before you regret your decision down the road when 3D media becomes a standard.
All that being said:
This is probably the best HDTV available right now for gamers and hardcore media consumers.
And as an audioholic, I feel like I have to remind you of this: A good surround sound sound setup is just as important as your TV, and the budget for your home theater should be split evenly among the two!