These mouse "problems" appears to be with the 3rd party mice, just as the 3rd party apps, which doesn't/cannot work with a Mac, not compatible yet.
The MBP's trackpad is excellent, but it is situated ergonomically not in the right place, being in the middle. The wrist has to bend awkwardly. But, Apple just can't put it in the right for the right handers, or on the left for the left handers. So, the next choice is the Magic Mouse. But, everyone is complaining that it is also ergonomically not good. And, because of that, I could buy one for less than 30% of its shop price. For the guy, who sold it, it was just a table ornament.
At the beginning, I found it strange too, it being that flat, that you can't rest your palm on it, that you have to use your fingers in "crab" way, using only one finger to click, one finger to scroll etc. Well no, it can be used differently and with comfort!
You can rest your wrist on the desk with 3 middle finger lying on it and the thumb and the little finger resting on the desk on both sides. Because of the low depth of the Magic Mouse, the wrist doesn't feel any stress. Now, you don't have lift the fingers to click, left click or right. You can use two fingers to scroll, up/down left/right, or even three fingers without lifting them off the surface. You move the mouse holding it with the thumb and the little finger with the 3 middle fingers resting on the surface. You can even zoom the desktop with Control + fingers going at an angle.
I have all kinds of mice, having used them with Windows and Linux. But, I've never found a comfortable and easy to use and exact mouse as the Magic Mouse. Now, I am even thinking of getting the Magic Trackpad, of course at about 30-40% its original price. But with the Magic Mouse around, I am afraid it would be unused and become desk ornament.