I want to give back a little. This forum is fantastic and helped me make my TV decision. I bought the 55A3000 today at Best Buy and pick it up Wednesday (8/29). They had the 60 and 55 on the floor. Tweeter and CC had nothing and couldn't give me any dates. (Tweeter is in trouble, but that's another story.) I had a 10% new mover coupon (my parents just moved in to the area) which helped. Also am getting a few bucks back courtesy of their RewardZone program. Enrolled today - didn't know it was free. Used to cost money. Nobody in the area would honor the TechDepot price. BB also wanted $400 for a 4-year warranty ("only $100 a year"). No thanks. Finally, BB has a 60 day price match promotion now through September 29, I believe.
I researched a lot and narrowed it down the 55A3000 and the Samsung HL-T5689. My decision was made when David Katzmeier, whom I greatly respect, posted a review a few weeks ago on CNET that, reading between the lines, said he wasn't too happy with the set. The big problem with the LED DLP 87 and 89 series sets, as with the 5679 LED TV that started it all last year, is brightness uniformity.
My set will sit on a JSP 55.75" wide credenza with a pair of bookshelf piers on either side that I purchased from Tweeter a year or so ago. I think it is 24" high and 24" deep. I noticed when I bought my dad the 55A2020 a while back that it said in the manual to make sure there is at least 4" of space on either side of the TV and plenty in back for ventilation. If I hadn't read that I would have bought the 60A3000. It would've fit but just barely (< 1/2" clearance on either side of piers).
My 2 cents. Thanks to Insley and others for blazing the trail. You all make me feel real confident I made the right decision.