Hey guys, The most important features for me include directional accuracy, soundstage, and imaging. I've narrowed my options down to the AKG Q701 and Beyerdynamic DT 990 Pro. While researching I keep encountering some very conflicting opinions. Which headphones do you think are the best for directional accuracy and what amp do you recommend to go with it? Please try to be as objective as possible. Thanks in advance!