Mcacc,ypao and Audysey all get it wrong. Too bright and they suck the life out of the midrange area. I had my system professionally calibrated by Umr,Jeff Meier and I can tell you that it makes a huge differrence. I attached a graph of what "pocket rta" app showed me on my ipad after he calibrated (pocket rta set to no weighting). I did this playing pink noise from an avia II audio test disk from all 5 speakers just like he did with his own test disc and equipment. The attached graph shows the results. This is what a professional cal job with professional equipment looks like using pocket rta app.
If you dl pocket rta on your device, play back pink noise on all 5 channels, you can manually adjust your receivers EQ to emulate my graph. This will be a very good approxiamation of a pro calibrated system. Much,much better than its built in auto cal system.
Remember, he manually calibrated the system with his equipment. All I did was measure his results with my equipment ( pocket rta and avia2 disc). Set pocket rta to "no weighting" to get the your EQ results to look like this. I tried this on my sons system and it worked beautifully . We a/b'd audyssey results vs. our manual settings for hours. Just smoked the auto cal results. Everything more natural and pleasing .If you listen to a variety of material (cd,vinyl,movies)and have a good ear, you will discover the same thing.
I hope someone tries this and posts their impressions.