I ordered some Beyerdynamic DT770 Pro 80 Ohm headphones after using the Turtle Beach X11s and I am quite impressed with their performance, the bass is much better and the soundstage is incredible. I am driving them with the headphone jack on my Logitech Z623 computer speakers which isn't very good but I will be getting a Fiio E10 within the next few weeks (will I see a massive change in sound quality?)
When I put them on I think that the right side of the headphones may be a tiny bit louder than the left but it's hardly noticeable at all, will burning them in help this? It may just be the way the songs that I'm currently listening to are composed however for a few of my songs it is bassier on the right side.
Here's a few images: (Head-Fi won't let me insert the images).