Just realize that the viewing angle is KEY. You don't want to get the wrong one and have the wrong viewing angle. Also I'm not so sure about 54U being the latest revision. So far I've found these:

LQ065T9BR
-51M
-52
-51U
-52U
-53U (according to post # 33, this is not the correct one to use)
-54U
-55
-55U

If you are able to download that spec sheet, can you post is here? It's not working for me for some reason.