Between the foam and the MF you should be fine. While I *do* use it primarily by machine, in tight spots I work by hand and I use MF towels with perfectly good results. Try both the foam and the MF, I think you'll quickly discover a preference for one or the other. The foam will probably be a bit more aggressive, but it's hard to say and I hesitate to generalize too much...different kinds of foam and MFs can be, well, different.
