For those that are not happy with their picture I would recommend downloading the AVS HD 709 disc
and spend some time learning how to calibrate your display. If you are not able to download/burn the image onto a disc, then you can purchase the Spears & Munsil
calibration disc. These guys are well respected and are authors of the infamous DVD shootouts and current player BD player reviews. The instructions are easy to use and it will get you close to where you want to be.
I will point out one thing, for those that are new to calibration, you may not be use to how a properly color/gamma/gray scale corrected display looks. It does not POP with colors like it does in stores, but it is accurate and close to what film should look like. I use calibrated settings for watching films only, and for sports I turn on all the motion crap.
The best option which is an additional expense is a professional calibration, not from the big box tech, but one that is recommend from folks on this forum. I debated early on when I got into AV whether this was worth it and came to the conclusion if I spend $$$ on a display why not get it professionally calibrated so I can enjoy it for years to come knowing I am getting the absolutely best picture I can.
Professional calibration is almost an equalizer when it comes to picture quality between some of these modern displays.