Signature Pro vs T5p for heavy metal?

The Signature Pro are better pick for these genres music and they improve well with AMPs help but i will recommend to upgrade the AMPs for better soundquality like JDS Labs C421 or highend ALO MK, RSA, Meir Audio AMPs.

i was choosing between T5p and S-pro as well, and ended up with S-Pro. I have to say that I do like the brightness and the fast response associated with Ultrasone, and i used to own a Pro900. however, the main reason i chose the s-pro was because the t5p was too bland for my taste. Beyerdaynamics are known for their colorless presentation and that seems to show with the t5p. Comparing the two, t5p has the upper hand in its airy highs and soundstage, S-pro has better mids and bass and much quicker response which is great for hiphop, pop, RnB . however, as a previous owner of Pro900, i wish if the S-pro had just a little more bass, then it would be perfect for me.  :)

Warning: confusing contrasting opinion incoming.

I vastly prefer my T5p over my Sig Pro for metal. Specifically guitars sound right, whereas they don't on the Sig Pro (at least not to me as a metal guitarist and frequent metal gig attendee). Distorted rhythm guitars just sound MIA on the Sig Pro, and actually I find their treble energy lacking compared to the T5p in contrast to the post above mine (makes itself felt mostly in lead guitar).  Not everyone will want to hear guitar the same as me I'm sure, but to my ear metal guitar on the T5p is more engaging than the Sig Pro and by a fair margin. Guitar sound seemed to rate fairly high on the OPs scale of importance, so is worth thinking about. To my ear the Sig Pro does not have an advantage in response speed over the T5p. T5p definitely do not sound thin, bass quantity is less than other headphones certainly, however the quality of the bass is superb. For metal I find it hard to believe that someone would want more bass than the Sig Pro puts out, I think you'd have to be getting into basshead territory to want that...

EDIT: Forgot how I'd described the guitars in metal on the Sig Pros before - saw an older thread where I said that I find them a bit 'polite'. That isn't a quality I want in distorted guitars in the metal I listen to.