Tailgating isn't the problem, its a two lane road with 18 wheelers blast by the opposite direciton at 65 mph, throwing stones at me.
Meguires is one of the best Brick and Mortar products available in a Carnauba from what I've tested. For online, carauba wax and a "step up in quality, Griots is the best overall for polishes, cleaners, claybar and waxes. "Zaino" would rank the highest in Polymer waxes, but its a painfully long process, with Klasse running a close second in quality.
Once you go power tools for finish, you'll wonder why you ever did it by hand, but then, I guess you need to be 40 something with aching joints....The best thing about power toys is...you can actually remove the swirl marks rather than just cover them up by hand. Sure, it removes a microthin layer of clear coat, maybe 2 mils in a worst case situation, but with todays clear coats at 35-45 mil thickness, who cares? The solution to the swirl marks is permanent.
Since you got a dark color, you may as well begin hand washing properly, linear direction to the finish and double bucket wash method. It helps keep the swirls to a minimum.
Since you *do* live in weather not compatible with Carnauba waxes, I'd highly suggest going Polymer, like Zaino(online) or Klasse(Brick and mortar stores) It will last a good 6 months in extreme conditions, where mortal natural waxes wither in 6-8 weeks. If the car is garaged, I'd go carnauba, if the car sits out in the weather, Polymer.