I don't really care for scrubby brushes and just hate scritch, so I go with silver-tip or carefully selected 2-band silver-tip. Uber-backbone can be moderately helpful but not necessary in loading triple milled soaps but I find it has little to no benefit when face lathering. I like a bit of backbone but find water retention and decent flow more important characteristics for a face lathering brush. I know I'm in the minority here but I like a nice soft luxurious feel on my face.