So when I had my first car I got kinda interested in detailing it but I never really looked for great results because it was an 01 and while the paint was still in good condition it had been parked outside its whole life (even before I bought it) and driven through a machine car wash way more times than it should have. The paint was swirled and way behind me wanting to fix it. My current car now has much better paint and I'd like to keep it in good shape. It's black just like my first car. Is a PC worth buying just for occasional personal use or would you guys say it's not really a necessity. What can it be used for besides applying Waxes / Polishes? Which would you recommend to buy with it? How long do pads usually last?