LCD TVs?

I'm not sure whether these are the right newsgroups to ask this question,
but I could not find one better suited. Sorry if you think it doesn't fit
these two newsgroups. If you know of a better NG for this question, please
post it.

I am thinking of purchasing an LCD flat screen TV, 13" size. In looking at
the Internet, one sees many different models. I do not know what features to
look for. Any suggestions on what features and specs one should consider?

For instance, the company that seems to make the most of these is Sharp,
with the Aquos line. Even just in checking out their models, only 13"models,
and only those with regular TV 4:3 aspect ratio (not widescreen models),
they have several such models. It is not clear to me what the differences
are between those models. Even when one clicks on their "compare" button, to
compare 4 at a time, I don't see many differences.

The lowest price I have found on one is at Amazon.com, $399 for the Sharp
Aquos  LC-13B2UA. Amazon also sells some of the other Sharp 13" models, but
at a higher price. I'm really not sure what is the difference in the models,
whether there might be something about that model that isn't as good as the
others? Or whether there were just more of that model made, so they are
selling for less?

If anyone has any insight into this, please post. (Or again, any suggestions
for other NGs or discussion groups to post this to.) Thank you.