I'll get around to testing the AF next time. My only hesitation in purchasing the new body was my concern regarding the "loss" of reach going from a cropped body to FF, but there were way too many benefits
Yup. Both formats have their pros and cons. As someone who recently bought a 5DMKIII, I found the loss of reach the biggest minus of the FF format. There is no way around it--it's just trigonometry. The only options are to buy longer lenses or keep the crop body for occasions when you need the extra reach.
I also didn't care for its not so "esthetically" pleasing sound. It just sound like a weakened mechanical noise, that's all.
Give yourself a break. It IS just a weakened mechanical noise. This is a camera, not a musical instrument. The silent mode is remarkably quiet and--at least in my experience--really helpful. I leave it on by default.
Re the AF system: it's just remarkable. Give yourself a little time--IMHO, it is the one place where the 400 page manual is deficient. I had to play with it for a bit before I figured it out. Worth the effort. It is simply amazingly flexible and well thought out. To give you just one example: you can set the AF point separately for each of the three camera orientations, and the camera will remember this. Also, the camera is highly customizable, and I have it set up so I can simply flick the joystick to move the selected AF point around.
Enjoy it. It is an amazing camera.