I like the the satin silver finish the best too. The colors are pretty, but the silver is the one I use the most, since I don't have to worry about it getting banged up.
Just for record, the finish isn't brushed, it's media blasted. It has a soft sheen, rather than being matte like brushed stainless steel. In the beginning of PBusardo's tour of Provape you can see one being sandblasted and the other steps it goes
through.