Morning guys. I have been reading alot of posts on here and i've been contemplating whether or not to get a PC 7424. I have no experience with PC 7424. My car is black 05 model. No swirls or defects, just a couple of rock chips on the drivers side fender. My question would be do i really need one? I just want a good deep shimmering look to my car. I'm using souveran now. All replies greatly appreciated.