well about two months ago i was looking for a 21inch tv for my dads room,so i checked out all the sony models,the picture quality is the same there is know difference however there is sound quality difference so i settled for the KV-AZ213M83 this one doesnt have woofers but it has a good enclosure and 10w+10w rms.if u dont worry about sound u can go for a KV-AW212M80/H but this tv although has two speakers is only mono sound.if u want stereo u can go for the model u mentioned it has stereo sound.
but i still find my 10year old sony tv better then newer wega tv.all the processing in the tv makes picture look bad compared to my old sony tv.