I for one am disappointed. I never owned a 71, but thought the PQ was great. Wife nixed buying one because of the highly reflective screen. Then I read about the TBE and other stuff and the fact that the firmware fixes hadn't fixed them. I to am looking to replace an almost 5 year old Samsung 50" DLP.
So why am I disappointed? Well, it appears that the main technical problems with the 71 still exist with the 650. In addition, while the screen does appear to be far less reflective than the 71, the red bezel is overwhelmingly unsightly, and the non-universal remote is also unattractive. Bottom line is that I'll wait until they are in the stores and I can look at one in person. If the red bezel looks as bad in real life as it does in the posted pictures, I'll wait for a grey or black bezel before I even bother to drag my wife down there to evaluate whether or not she can accept the less reflective screen of the 650. Meanwhile, I'll start looking at other LCD alternatives. To bad to because I really like my two previous Samsung HDTVs (DLP and LCD).
I'll also keep following this thread to see if things change over time.