If you are willing to pay more, you can sometimes get these features:
-1080p/upscale (pretty standard)
-3+ HDMI ins and 1 out (the future and current of digital sound and video)
-Internet capability
-Universal remote (some are very nice)
-LED backlit-in theory will last longer, is brighter, and doesn't 'fade' like others
-3D
The Aquos used to be really well rated but I haven't looked at them recently. Historically, they've been a little more costly but well worth it. Speakers are very good for TV speakers. They do have a love/hate styling. Samsung has been the driving force in LED backlit displays and have made major contributions to the development of 3D. They are also the second most aesthetically pleasing TV on the market (select lines of course). They have a TV for every price range, from 720p to 1080p 3D. My buddy just got a 50 something inch Sony flagship, which is 3D, and it is amazing...it was on the pricier side. If you get a Blu Ray player, get one with the ability to upgrade firmware. Thus far, the PS3 has been the simpliest way. Oppo makes amazing Blu Ray players tho for a very cheap price compared to Marantz/Elite/Denon/etc. Overall, LED backlit LCD is the way to go, for the most part.
The TV that defies all logic is the Pioneer Elite Kuro. It is a plasma TV, but for about the last decade, the Elites have been consistently rated among the best or the very best. The picture is as bright as a LED backlit LCD, sharper, blacker blacks (historically a plasma weakness), and smoother transition. In theory, it should be inferior to other TVs, but it isn't. It has all of the benefits that plasma offers, while having all the positive performance benefits of a LED backlit LCD. It is a gorgeous TV and a decoration piece, but it does cost a LOT. If you are a movie buff/TV person, I promise you that you will know where that money went.
It's an LCD TV, which are less expensive than LED TVs. It also doesn't seem to have any sort of internet connectivity/apps.
I think you meant LED backlit LCD vs. fluorescent backlit LCD.

Organic LED is still a few years out IIRC