I picked up a pair of NB 805's at my place of work, for a phenomenal price ($27). I was unsure at first, for these are exceptionally light shoes with little cushion to speak of, but decided to give them the college try.

I am impressed. The design of this shoe emphasizes speed and fluidity. What there is beneath the foot consists of a strong, dominant arch, and Abzorb technology, light on bulk but surprisingly good at alleviating impact. The heel is a bit lower than many runners, focusing the strike point more on the front section of the foot, at a more natural tilt. This can help runners to avoid shin splints and shin pain associated with the heel striking first, which can cause a dorsiflexed (tip of foot pointing up) foot to plantarflex (tip of foot pointing down) too forcefully, and cause muscle pain. Although the MR805 is not really designed as a long-distance runner, its interpretation of foot placement and support allows for extended runs with less muscle fatigue, and less felt impact. Good things, these.

For those who are into Chi running, this is a nice choice. The high arch funnels contact to the strong ball of the foot, allowing for the forward center of gravity used. The featherlight weight also helps.

Lastly, it's a durable shoe. The arch is designed to hold up, and has done so for me admirably so far. Tread wear seems good, and no wear is visible save for some fraying along the soft inner lining where it comes up over the mouth of the shoe. And it looks awesome as well(I have the red and black model).

Fit is important. I tried two sizes, and found even a mere half-size off had the arch in the wrong place for my foot. I turned to the smaller of the two sizes I most commonly fit into. The shoe fits me very snugly, but the arch felt best where it is at. Make sure you find your fit, for this shoe's arch is too prominent for a bad fit - you will feel it fast when you run in it.