I believe the bottom line question is not whether to calibrate or not. The question would be, is the $250-$400 cost of a professional calibration worth it vs. a $20 DVE HD Basics (I used) or Avia do it youself calibration. I would imagine the professional would be better. I'd also guess that the DIY calibration would get you to 80-90% of what the normal viewer would be able to discern.
As with many things, the value of more bucks for marginal, if even noticeable improvement is worth it to each individual. That is a call only you can make for yourself. I would highly recommend investing $20 on the DIY route. It is a bit of a learning curve, but I really enjoyed learning what went into creating a picture on the TV machine. If you are not one who enjoys that kind of thing AND don't mind spending for the pro. then that is a good way to go. So it is more of a personal preference, than an objective choice.
Cam, good luck.
