After 500-700 miles on these shoes, I still love them.  I have not yet worn through the black continental rubber, but it is definitely looking thin.  They still run well and I use them regularly for anything from easy 2 mile to half marathon distances.

I don't know if the current Ultraboost shoe is different than what I am reviewing.  I bought these shoes a little over a year ago and I estimate that I've logged 500-700 miles on them - mostly running, but I also sometimes wore them to the gym and other places. I recently ran a 10 mile race at a 7:30 pace on these shoes with well over 500 miles on them and they were still great.

Currently, the boost foam still seems to be working great, although the shoes don't feel as marshmallowy as they did from about 30 miles to 300 (?) miles.  For a while, they were seriously the most comfortable shoes to slip on.  I really like the knit upper.  Other than a few stains from dropped food on my shoes, they still look great.

As far as running form goes, I switch from ball of the foot to mid-foot to heel striking freely in the middle of my runs (feels better on my joints to switch it up), which might explain why I have less wear on the soles than some other runners.

I am 5'7" and 155 pounds.