I'd avoid the Beyer 770s and 990s if you are sensitive to highs. The 880s are pretty awesome. They all have a bit of a plump bottom end. If you look around (including used in perfect condition/demo/return type stuff on Amazon) you can find 880s for under $150. They'd be at the top of my suggestion list for a metalhead that liked bass and was sensitive to overly harsh highs. Be careful as there are about 5 or 6 versions of the 880s. There are Pros and Premiums and 32, 250 and 600 OHM versions. There are differences in how they sound but if you won't be using a dedicated headphone amp, I'd stick with the 32 Ohm version.
You could probably do worse than the Audio Technica ATH-M40x as well. The M50x has just a pinch more bass. I prefer to use aftermarket terry cloth earpads with my M50s. If I were to buy them today, I'd save a few $$$ and go with the M40x. These have a more scooped sound compared to the Beyer 880s. That's isn't necessarily a bad thing with metal and hard rock.