Got my iMac 21.5" yesterday... my first Mac...

First impression is that system is very fast and easy to use.

Something I don't like is the Magic Mouse. Too slow for my liking.

I am on 21" and I do feel the rear of the iMac is hot.

Accessories maker should have design a exhaust fan to suck out the air..

I sold the mouse to get the trackpad. I am not comfortable with how the magic mouse motion. After getting the trackpad, i never regret my decision to change to trackpad.

I have a standard bluetooth mouse that will work on my MAC and Windows. So, in case that I really need mouse, I can still use my bluetooth mouse.