I purchased a 600m on October 1st. Located through local home theater installers. However it had a bad case of DSE and the merchant picked it up and when he got it to the authorized repair center the unit didnt turn on. Long story short I just did a google search like this "home theater + your zip code" locate some merchants and ask if they have any units for sale. After about 6 calls to different places I located a brand new 141 and it's on its way and will be here Tuesday. They were great! Got a solid deal on the set, the guy even opened the box and checked for buzz for me.
Give it a try if all else fails!!!