Hey payj, I listen to those genres too. Normally, I would lay off open cans for them, mainly because my DT880 (known for strong bass), similar to the HE400, just doesn't deliver the low range as well as even an M50. And we're talking about a D600 here! So there is a huge difference in bass.
On another though, I think you can add a few cans to your list. The new AKG Tiestos sound quite promising, the M100, renown PRO900, hot COPs, and the classic M50. I can't really stand supraaural cans mainly because my ESW9A pads keep biting at my ears. But if you can cope, then the Amperior, DT1350, and TMA-1 may work.
It's nice to see someone on the same boat :)
The HE-400, when properly amped, has significantly more bass texture and kick the DT880s. I own both, and there is no comparison.