This afternoon Piers came round to isf my PHD8. I've been wanting to do it for a while but was concerned that after spending all that money I wouldn't be able to tell the difference. I have always been happy with the picture for the most part but I wanted to see if we could get any more out of it. So Piers brought his equipment to see what could be done. It was quite fascinating to see just how badly calibrated they come from the factory. A lot of the settings that you can do yourself I had in the right spot but the colours were off. I hadn't noticed this until the screen was calibrated. Skin tones for an example are now much better. We ran DVE before and after the calibration though saw more after than before. The difference that it makes is not night and day but, like Piers says, if you want to squeeze the last 10% out of your screen then the isf treatment is the only way. Now I've had time to sit down and watch the screen I'm pleased with the differences. There's more vibrance and the picture looks almost smoother. It makes me just want to watch it more. The big question most would ask is - Is it worth the money? That depends on your point of view. It's not cheap but compared to modifying a car its peanuts. If you just want a plasma for the big tv thing then isf calibration isn't for you. If however you want the very best pic you can extract from your screen then it's worthwhile if you can afford it. Piers is a thoroughly nice bloke and it's well worth the time just to get to know him.