Whew! I have just finished plowing through this entire thread.
Thank you all for all the great info!
I have been very happy with my 4280 using the D-Nice Movie mode settings since August of 2007 and haven't really looked at this forum much since then.
Imagine my surprise when I took a look last week to see what was going on and found that a) Pioneer is leaving the Plasma business and b) Because of this unfortunate event, I could, if I act quickly, now get the full 1080P 50" Kuro that I wanted originally but couldn't afford, for a few hundred less than I paid for the 4280!
My local dealer had one 500M left in the box (build date November 2008) and they are due to deliver it next week. I went to the store yesterday and we unboxed it to be sure there were no cracks and powered it up on their house feed for a few minutes. All seems well and I can't wait till next week!
I will be using the break-in DVD and D-Nice break-in settings (Thank You D-Nice once again!) and have ordered the S&M "visual calibration" disc.
I am still a little confused though about the proper settings for using the PS3 considering the M's "Auto" bug..
See my post a little later on for questions about this.