I have some DSE too, but it's not really bad. All my plasma's had it in some degree (also my LG).
What i noticed about the 65VT60 so far(80 hours on it), is the redish halo on full white screens. I've read whole threads about it, and hope it cleans after the 200 hours mark. (i can make it disappear, if i fiddle with red gain, but then the image looks poop).
What I also noticed was that the blacks are mostly nice black, but when the room is totally dark, i can still see the panels illumination. What i see are very thin horizontal lines (a bout 1 or 2 millimeters apart from each other), going from the bottom to the top. I've tried searching anything about it, but it was never addressed, for as far as i could look. Is this interference like effect normal? Because it seems the screen is illuminating only from these lines (only noticeable in totally dark rooms).
(i've tried every setting and i have the TV properly grounded) My 55VT50 had this effect too.