For the last year+ I've been wearing Nike's City Court shoes. They seem to last about 2-4 months depending upon how much I play. My primary interests are comfort to protect my middle aged knees and stability to avoid nasty twisted ankles (I once wore my running shoes to play tennis...HUGE mistake of epic proportions.) I need a new pair of tennis shoes and am about to buy another pair of City Courts unless someone can point me to another product which offers even more comfort and stability. Any opinions on other options I should try at the shoe store? Cost is not an issue since I've done the knee surgery thing and that was far more expensive and time consuming! OTOH, the City Courts are less painful in price from my standard running shows (Nike Air Pegasus).