KY Jelly is a water-based lubricant that is widely available, and for that reason many people are familiar with it. Unfortunately, it has some major drawbacks as a sexual lubricant. One is that KY was not developed as a 'sexual' lubricant per se, it was developed as a medical lubricant. Medical lubricants are used when something needs to be introduced into a body, usually once. Lubricants which were developed as sexual lubricants will take the friction of sexual activity, be 'slicker' in use, and stay wetter, longer.
Sexual lubricants are a very sexy sex toy.
In our store, people who take sample packets home to try them out, invariably come back raving positive things about them. Sexual lubricants come in many different varieties and properties, and most people can find THE lube for themselves.