Having used the "standard" in stability running shoes (the Brooks 'Beast') for a while, I decided to switch after reading so much about these kicks.  After one tri, I'm switching back to Brooks.

Yes, these shoes are VERY light (for a stability shoe) and yes they are extremely breathable and airy and yes they have great stability, but they just don't have the cushioning in the fore-foot or the durability that a bigger dude like me needs.  After only about 30 miles of training and one tri-sprint race, I've noticed considerable compression in the fore-foot....so much so that I've gone back to my old "Beasts" for training.  That stinks when I paid over $100 for these things...

Overall, I'd only recommend these rides if you could get than for about $50 or less.  Disappointed...