I now own two pairs of Kinvaras - original and V2. I have been running for over 30 years, and have worn most every kind of shoe. Before these I was wearing stability type shoes, but every morning for the last couple of years when I got up my feet were sore and cranky. Since I switched to these that pain has gone away entirely.

Get them big enough to wear some good smartwool socks with them - as someone else said, it's not just what's under your feet that's minimal - the upper is quite lightweight/porous and my feet have occasionally been cold. On the plus side: I ran in the rain yesterday, and they get wet quickly but don't really "hold" water. No squishing or extra weight.