Just get 1080p and be a little futureproof plenty of deals out there.
unless you are talking about plasma tv then a 720p version is still better for sports than the cheaper 1080p lcd led
btw: LED isnt a type of tv that is the backlighting type.
its LCD TV w/led backlight (vs CCD backlight)
to farther confuse you there is edgelit and full array LED types as well.
Edgelit is worse. Many of the smarter sets can dim the full ARRAY led backlighting in sections to make the contrast ratio better
Maybe just post up what you are looking for and we can pick apart how good/value/deal etc they are.
I love my 42" 1080p panasonic plasma its really good for sports.
Positives: Great for sports, crisp image, longevity has been great so far.
negatives: power usage.. esp on full brightness it can approach 300w, on "default settings" which is ok for night use it uses 150w about double a 55" Lcd w/led
-Can be dim in bright room
-excess heat have to manually adjust the badly placed home thermostat that's in that corner.
-Shiny screen can be a distracting mirror if placement of lights/windows is not good.
By contrast the 55" Vizio M series at the parents house
Took a massive amount of fiddling with settings to fix the TV to reasonable image.
It is a great tv . When not setup correctly it looks fake oversmooth with weird colors.
The backlit full keyboard double sided remote is quite nice in a dark room as well.
Is brighter, bigger, uses at most half the power, has built in netflix etc that actually work good.
Is more complicated has different modes for different types of shows to get the best performance.. ie one for SOAPS, one for action shows, one for sports.
The vizio M series Lcd w/ full array led is better in every way than my panasonic plasma except sports in a darker room and simplicity.