A fine choice!
The last two headphones I bought outright were my JVC HA-S500s, and the Ultrasone HFI-15G portables...and I made trades to get the Ultrasone HFI-780s and the CAL! I have another 7 or 8 sets, but they all are unused for the most part. I really haven't felt the need to go any higher up the headphone heirarchy....the years of damage done to my ears while growing up kind of make the idea pointless. I enjoy my main three...S500, HFI-780, and CAL! and am entirely content with them.
I had some ongoing ear infection issues, so for a while I barely used headphones at all....but my Nexus 7, I use all the time.