I bought a 7p top composure directly to Penrose. And although it was much more durable and comfortable I ultimately could not get the sound anywhere near the Penrose, even with messing with the eq on pc. But it might not seem that big of a difference to you. If you have somewhere with free returns give it a go. The arctis pro has a bigger range of eq settings (the 7p is only 5 band) I think the pro is 10 band, so that might be able to be dialed in better.
Well, i've been using a pair of Beyer Dynamic DT770(250ohm) on a Sony Receiver via HDMI for lossless audio. Sounds amazing, especially when i increase the bass on my receiver settings. I'm more than happy with the sound, it's just the wire that i'm tired of. i want the convenience of having a wireless set of headphones next to my couch on a night stand, instead of having to always plug in an extension cable into my receiver and then plugging my Beyers into those, while the bloody wire rubs against my neck or hits my shoulder. it just seems messy and a bit dated at this point IMO.