I got a mini the first week they came out, switching from an iPad 2. The mini is the computer I use FAR more than any other. I've stopped carrying my kindle on trips (mini is worthless in sunlight, but I only do that on the beach and I rarely go to the beach).

The mini makes a great speakerphone (with skype or google voice), video phone - particularly with skype, and even camera (better camera than my iPhone4 but obviously looks a bit silly when taking photos).

I really like using the mini as a 'dedicated' video / voice conference device as it lets me do other things on my Thinkpad (or more recently Chromebook) while on a call.

I will probably get the retina mini when it comes out, but for now it is in use many hours every day. When I pick up my iPad2 now, I almost can't believe how heavy it is - it has been pressed into use as a fitness monitor using Digifit and an ANT+ HRM.