I have gone to K-nails quite a few times for manicure/pedicure services.... at times there can be a long wait time, but overall the service is good. Their prices are reasonable. They take walk-ins with no problem. I've gone and had services rendered during my lunch break and I make it back to work on time!
Pros: friendly staff
Cons: ambience (not really spa-like), there have been loud kids running around at times, sometimes there is a long wait