In my humble opinion, Oxyclean Free works better than PBW at what I want it to do, and that is to soften/dissolve kraeusen. I don't get mineral scale on my equipment, so I don't have to worry about that aspect.
Be careful with generic or home-made PBW clones, and always pre-mix with water instead of adding the powder to the vessel to be cleaned... I bought some from a popular online homebrew shops once just to have it eat through two Better Bottles.
The Fiesty(sic) Goat Brewery est. 2007 & Clusterfuggle Experimental Ales est. 2009
Planned: sLambic II, Flanders Red II, Orange Blossom Mead, Fat Man Porter
Primary:sLambic I, Janet's Brown
Secondary: Toasted Caramel Port, Flanders Red
Kegged: Hefeweizen, Centurion Falcon IPA< Dark Saison
2013 dump volume: ~2 gallons