This is a great tennis shoe.  I have a very narrow foot and the shoe is snug around my whole foot. There was a short break in period for me. I wear an orthotic insert so that is probably the reason for the slight break in time. Other players I know that have this shoe said they required no break in time.  The shoe is as stable yet lighter than the prince T22 that I had been wearing. I am a 3.5-4.0 player and play 3-5 times a week.  So far they seem to be very durable, but I have only had them about a month. I tended to stand more flat footed when wearing my T22's, and with this shoe I find it easier to be on the balls of my feet and stay there with out thinking about it constantly. Its also a fun color!  I get lots of compliments on them.
5 month update, still love this shoe as do a couple of other player I play with.  I have had no problem with the exterior of the shoe. Its still in great shape. I am playing approximately 4-5 hours a week.  They were used inside and outside.  I am getting ready to purchase another pair because the interior has lost its support.  I typically replace my shoes every 5-6 months as advised by my orthopedist.
According to them its not the exterior of the shoe that causes knee problems its the breakdown of the interior. As long as I replace them regularly (makes no difference what brand I am wearing) and wear my orthotics, no more knee problems.  I usually know its time to replace them when my feet and knees start to hurt. Which is whats going on now so I am replacing them with same shoe.
I would think that if you do not have a narrow foot that this shoe might be difficult to break in or even wear for some people.