I went ahead and bought the Note. The first one I got had some kind of firmware problem. The home button was flaky. It would take you to the alarm clock display once the phone was plugged in. The only way to get the button to work correctly at that point was to do a factory reset.
The second phone has been solid as a rock! I've suffered none of the problems that I had with my Captivate. More than that, the phone is a great, well integrated, communications tool. The jump from the Captivate to the Note reminds me of my feelings when I switched from my Sony Ericsson P900 to the original iPhone.