What kind of knee pads are you looking for? What will you be using it for, and do you need them, or just want to improve comfort? Tel us a little more about what you're looking for.
I have bad knees, and prefer to use knee pads that take the weight off my knees, and rest it on the shins (like the carpet/flooring guys use). They look like shin guards, and are very comfortable to use when kneeling, but are hot and heavy. So, if you don't 'need' them (yet) they may be overkill.
Otherwise, there are many "gel pad" knee pads on the market that are extremely soft and over-padded.