Mike,
The swirl marks were hardly noticeable actually. As Simon stated, they are never a problem on commercials buton plain domestics can be very noticeable and difficult to brush out, thats why I only use the RX20 on commerials. They are even less noticeable since fitting he glides.
Daryl,
Yes I always prespray and at the momen I use either Prochems Pure Clean or Powerburst with either Alltecs Ultimate Master, Hydramasters Hydra-dri, or just water through the TM, depening on the situation. In this instance it was Powerburst prespray and Ultimate Master rinse, although I think I could have got away with a plain water rinse.
Dave.