If you're expecting any sympathy from me, you can forget it. 70"? How far back do you sit? Does the San Andreas Fault run through your TV room? Why do you want to be able to count nose hairs?
I've had a 70" DLP since 03' but have been looking at replacing it with Sumsungs 75" led, if they ever decide to release the darn thing (the new models have been out since March except for the 75", it's been 'delayed' for unknown reasons). Enjoy the TV; As long as you have decent viewing distance the huge screen freaking rocks, trust me!