So I've been thinking about this recently. I have a Toshiba 51H84, it was about $1200. I have my tv set up with my avia disk, and I know that there are things that an ISF certified technician can do to improve the picture, things that I can't do. For example, I know my greyscale is a little off. Anyway, is $300+ worth it for a $1200 TV? Also, would the adjustments be relatively permanent? If I were to move in a year, would the improvements still be there when I set the tv up again? Who's done it, what's the word. Thanks for any info