Strengths: Not many, yeah people can do extraordinary things but there are better ultra runners than Dean Karnazes.
Weaknesses: Self indulgent, ego the size of a planet
Overall: poor, Tim Tweitmeyer is a far more inspirational ultra runner but doesn't feel the need to crow like this. In short Karnazes beleives in his own hype, yes he's good but there are many better Scott Jurek etc
Strengths: Plush, cushioned, they handled a 40 mile run no bother.
Weaknesses: Took at least 50 miles to bed down.Little slippery in the wet
Overall: Very Very good a big step forward from the Triumph 3 and I prefere them to the Asics Nimbus. Dirt cheap in Dubai!
[Update 06/06/07] On my second pair now (at 40 pounds a pair why not!). Tread has a tendancy to pick up stones and their not that long lasting. I went through the heel rubbers in about 350 miles. These are minor gripes though they are a very comfortable cushioned shoe once you have got about 50 miles in them.
Weaknesses: Toe box is too narrow for me, I get hot spots on the balls of my feet after 20 mins running. The shoe comes with "sock liner" i.e no seperate tongue and therefore if you have high arches or wide feet it doesn't matter how much you loosen the laces their still overly tight.
Overall: Well cushioned, perhaps too much in the forefoot. I find them hard to run quickly in as the toe off phase of my stride feels all wrong in these shoes due to all the cushioning. Back to Asics Nimbus for me. Their also expensive