If you wind up not keeping the Shure IEM's for some reason I'd like to toss out the Soundmagic brand. I picked up some E10's in August last year for my European trip. My Senn over ear were going to be inappropriate especially when you need to pack on the light side. The E10's present themselves very well with excellent bass, pleasant extended highs and mids that are kinda rich and not too dominant. Sound and Vision for the past couple of years have given them the best at their price point.
Regarding the reference headphone, HIFIMAN HE400. Under $500 and a steal IMO. I love them with my Schiit Valhalla amp and NuForce UDac2.
