LG 55" 1080p 120Hz LCD HDTV 55LK530 Anyone know if the LG xxLK530 series use IPS panels like the former xxLD520 and the xxLK520 series did and some mixed with a panel lottery of PVA's?

I have one day to return this HDTV to Walmart should I choose to do so. My question is there anything in a similar price range that has a better overall performance? For the most part, I enjoy this tv. The only slight reservations I have about it is sometimes when the picture pans quickly...