The iPad mini is "as thin as a pencil and weighs 0.68 pounds, half as much as the full-size iPad with its 9.7-inch screen"(Svensson). In comparison, to other devices, the Ipad mini is "0.5 inch[es] larger than most full-size mainstream tablets and 0.9 inch larger than the iPad's screen" (RT Review).
I do not have an iPad Mini, a tablet, or an iPad. I think they are practical, and I understand why they sell as well as they do; personally, I would prefer to put money into building a computer that is capable of holding raw footage, and hosting film editing software. Also, when I go on a trip, I like having the excuse that I did not have access to the internet. I do not like having one foot plugged in, and the other out. I think having iPads, and even mini laptops obligate us to check Facebook, email, twitter, and blogs.
Granted, I think unlike the stereotype of the middle child, these mini's are doing quite well for themselves:
"Apple has sold more than 100 million iPads since their debut in April 2010. Analysts expect Apple to sell 5 million to 10 million iPad Minis before the year is out" (Svensson).
They are definitely striking some consumer interest. As stated in a Microsoft review "If
you're an early adopter willing to forget everything you know about
navigating a computer, the Surface tablet could replace your laptop.
Everyone else: wait for more apps" (RT review).
http://www.huffingtonpost.com/huff-wires/20121024/us-tec-apple-ipad-mini/
http://reviews.cnet.com/tablets/microsoft-surface-rt/4505-3126_7-35332494.html