A big noise of opinion from here is for you to just turn the factory integral speakers down to the off position. That necessitates a modest amplifier & a couple of speakers to start with. Sorry that means more money, but pleasure from the sound improvement is a matter of magnitudes. That will be some real sound projection that leaves the in set cheap tinny in the dust where they belong.
I have a secondary Panasonic LCD. Mostly watch DVDs on it. It's refresh rate must be around 16ms as it's 4 years old. Motion lag/blur just hasn't been noticable or annoying at all. To see how refresh has importance or not to you, spend some critical viewing time at a showroom when they aren't busy.
I'm close to purchasing my first LCD HDTV. I'm looking for a 46" display and I'm choosing between Sharp & Samsung.
I like the numerous inputs of the Samsung (LN-S4695D), but I wonder about the sound quality. The Samsung appears to have downward facing speakers, with a deflector plate to direct sound forward. The Sharp has forward facing speakers below the screen.
Another consideration is the refresh rate of 8 ms for the Samsung vs. 4 ms for the Sharp.
Any advice you can share for these (or any other issues) will be greatly appreciated.