Be very careful with t-cut, i used it once (on a dark metallic grey volvo i was selling) and didnt wax back over the top of it, and after a few days the area i treated turned dark green! It was only noticable in the direct sun, but i learnt my lesson there.
I have a black / gold 182, and swear by the Maguire's 3 stage wax treatment (paint cleaner, polish, canubra wax). My rear quarter panel was resprayed after being keyed, and it developed a very dull flat spot. However after using the Maguire's, it was transformed, and never went dull again. This stuff masks swirls rather than getting rid of it, however it is very good. Anything more than a car wash swirl will be pretty hard to shift to be honest. Give it a shot.