I always allow the technology to age a little before purchasing, allowing for the most dramatic depreciation to take hold first.
for example. one of those Mitsubishi DLP 65″ went for approx $2000 back in 2007. By 2010 we were able to buy it for $1000. Best Buy is still selling it for $900 two years later. I can live with that.
The premium paid to have the newest and latest tech simply isn’t justifiable.