Senn 598(all around?)
Ultrasone 2400(too harsh?)
Beyer 770 pro 80ohm(needs an amp?)
AT AD900(not sure about these)
Any suggestions? I want to stay in the under $250 range. Any choices that stand out or one that I should add? I plan on buying off of Amazon due to the fact that they have a solid return policy and I'm a Prime member. Thanks in advance.