Can I pretty much use an DE razor. I saw this at target and it came with 10 blades freehttp://www.target.com/p/as-seen-on-tv-microtouch-one/-/A-15128601?reco=Rec|pdp|15128601|ClickCP|item_page.vertical_1&lnk=Rec|pdp|ClickCP|item_page.vertical_1Also, dumb question. Is the difference between a double edge and single edge that you can flip over the razor and use both sides thus doubling the razor life?Also what does using a shaving brush accomplish, is it that much better than lathering in your hands?