Here's just a few that particularly stand out to me when comparing between pairs. None of it is mainstream, but it is a good peer into my music taste. ;)

1. Busted Bayou from DKC Tropical Freeze: amazing song in its own right, but also great for testing out imaging, instrument separation, and soundstage with everything going on.
2. Camellia's GHOST: the beginning part is perfect for testing out bass and treble in EDM. The former can be quite punchy and visceral on certain headphones and the latter somewhat brighter.
3. Teminite and PsoGnar's Lion's Den: perfect for testing male vocals, which can sound especially full and detailed here. Another awesome choice for EDM, in this case dubstep.
4. Mirror of the World: aka Baiken's theme from Guilty Gear Strive, the guitars here sound simply immaculate and heavy as hell on higher end gear.