Everyone has his/her own faves; I use Klasse wax and sealant on my MINI and am very happy with the shine and durability. Same holds for the wash-so many brands. Don't use Dawn or any other detergent not made for use on cars, as they can ruin the clearcoat. If you want to check out 'extreme' car washing techniques, check out http://www.carcrazy.net click on care care, and then click on 'tips from the guru'. There are lots of sites out there that sell microfiber towels, clay bars, and all other kinds of detailing equipment. Your clean Prius will have an even lower drag coefficient than a dirty one, and your portable garage will help reduce damage from the elements nearly as much as a 'real one'.
When the wax no longer wants to buff out easily (or the paint still looks like there's foreign matter that won't come off), then I will use the #1 (cleaner), #2 (polish), and #3 (wax), all in that order. It takes 3 times as long to do the car, but I don't have to do the 3-steps every time...really only once or twice a year or whenever I've neglected my regular washing and waxing routine.
I have a question: Does NuFinish work on top of the wax, or what? If NuFinish isn't a wax, then what is it, and can you still wax? :?