You wont go far wrong with an ac unit. In my curent house I have a kelvinator, popular and cheap in Australia. Great for cooling, a little to effecient sometimes at cooling. But you wont go wrong with mitsubishi or panasonic. I havent seen the lg in action so I wont comment.
Thanks for the info on the chiller though, I still might incorporate one in the future.
By the way, hows the new po4 reactor working out for you?