The front squat is a beast of a move, and is also surprising easier on the lower joints than the traditional squat. it equally helps with balance, strength, and building endurance and flexibility. FRONT SQUATS FOR EVERYONE!
From the book "Strength Training Anatomy". I have obtained this book - and it has completely changed the way I work out. Sumo Deadlifts are definitely my favourite at the moment. It works so much of the body in one go!