I started out using the vroom micofibers, then went to a sheekskin, then the grout spounge. The sheepskin is definately the best IMO. It releases dirt great, smoothly glides over the paint to prevent marring, and the sheepskin actually gets in all the little cracks and crevices such as the spots in between body moldings and what not, whereas the MF and grout spounge isnt able to get in to those small spots.
something with Knap. I have used onr with alot of things. I find that if I use something like a mf, sheapskin, or chennile wash mit Ipick up all the dirt. I also use a mf cloth everyonce in a while.
I would sugest something that will trap the dirt and then release it in the bucket.