The Lexus SC300/SC400 should be stricken from your list. Lexus lost my favor on that one when they made the Supra the better performer of the time.
My favorite Lexus is the newest LX, because it's so capable and could coddle me in Lexus luxury anywhere in the world if I chose. From the putrid alleyways of Bangkok to the rolling dunes of the Sahara, the LX can handle it. Moreover, Toyota improved the LX over today's Land Cruiser Toyota version, unlike when the SC400 was held back in the 90s in favor of the Supra.