I just sold my 589s to get the mudzillas. So for i love them, they really gave my bike an aggresive look.
IMO the 589s are way better tire then the mudlite ever thought of. I really loved my them but i wanted something more aggresive. The 589s are a great all around tire and they will last for a long time. If your looking for a mud tire i would either go with the zillas or outlaws.