Any recomendations on knee & shin guards for mountain biking?

I love MTB but gravity and I are not speaking at the moment. It’s a long story…I wanted to go one way, it wanted to go another. Anyway, we just don’t get along any more.

I can get a good price on Fox Raptor knee/shin guards. Or, should i get Fox Launch guards? Is Raptor better than Launch? The Fox site is pretty…and useless.