Flexibility in the sole beneath the ball of the foot allows repeated quick forward movements. Less shock absorption is required in tennis shoes. On soft courts, wear a softer-soled shoe that allows better traction. On hard courts, select a sole with greater tread. A high-top shoe provides support when landing from a jump and helps prevent ankle sprains.
Most doctors recommend hi-tops which can cut down on ankle injuries.
It's a heavier shoe made mostly from leather. It's also lighter material to allow foot to run and jump and land minimizing injury potential. But if you're going to play tennis everyday, the cross trainer won't be the best bet. It gives you flexibility and allows you to participate in court games where you need quick stops and provides support around ankles. You can find a very good shoe for about 50 dollars.