One combo to rule them all : Project PreBox S2 > Project Headbox S2 > Grado GH4 The most musical : Apogee Groove > Focal Clear Best nomade ...: Audioquest Dragonfly Cobalt > Meze 99 Neo ... And semi-nomade : Cowon Plenue S > Final Sonorous II / Final F4100 Best polyvalent headpones : Koss KPH30i