I edge all my residential yards straight vertically at a 90 degree angle. I have this one guy who keeps giving me crap about edging at 45 degrees and I politely refuse. Personally I like 90, and I use a stick edger so it is much easier. But it is easier to blow grass off the walks when it is 45. How do most of you guys edge walks? Maybe someone should set up a poll, since I don't know how.