I've owned silver (a PF), and a light gold (also PF), both excellent colors - dirt-wise.
I've also owned Black and a very dark Gray - both awful for dirt and swirl marks.
I had never owned, or even cared for White, until I saw the BP 4R. "Pearl" fits this paint well, as it has a sort of luminescense to it. It's like the 4R blue, it sorta changes depending on the light. Looks really good at night.
I think it looks good on this big truck, and I've had an unexpected number of compliments on it.
I have found it easy to care for. Obviously it's going to show dirt in really crappy conditions, but for day-to-day dust, dirt, even rain, I have been very pleased with this paint color. I usually wash it at a DIY spray wash, and wipe it down myself, but it has gone through a car wash several times and as yet shows no swirl marks. I'd buy it again.
Only issue: Bugs on the front face probably show up more so than on darker colors.
EDIT: I forgot to grade it. Well, this is totally subjective isn't it? On color appeal, I like it much better than silver. (I liked it before I bought it). On maintenance, it's a 1-2 IMO. I rank it so close because by the time you notice silver is dirty, it'd be the same for BP.