Eliab just finished calibrating my HLS7178 a few hours ago. Since then I've been watching just anything and everything HD, and playing as much Xbox 360 as possible.
It's been said before, and I will say it again: If you are on the fence about getting a calibration, it is VERY much worth the cost and I would highly recommend Eliab for the job.
Prior to the calibration, I had done all of the user level/forum recommended SM tweaks on my own ... and I thought I had done a pretty good job of improving my image (who knows, maybe I did). It does not hold a candle to what my display is doing now. Everything is mch crisper and cleaner (my focus was way off), there is a fraction of the noise in the picture that there was previously, the colors are spot-on (and not 'screaming' at me anymore), and details exist in the picture that I simply had never seen before. I'm truly amazed at what the set can do now.
Eliab himself was outstanding, providing blow-by-blow analysis of what he was doing, what the equipment he used was doing, why certain changes were being made, and stopping to point out what a specific changes were doing to the picture on numerous occassions. It was quite the education, and he was a fantastic teacher!
So, my executive summary is this: It was well worth the money, Eliab is a great guy, and is great at what he does. Highly, highly recommended!!