I actually started looking at the Fidelio X1 and they seemed as if they'd be right up my alley for the most part (I hear mixed opinions on their usage for metal and rock) but see comments raving over their electronic/hip-hop performance, which caused bit of a personal turn-off since that's ~40%...

Hi there Head-Fi!   I have had experience with some entry-mid audiophile headphones (I own the Sennheiser HD 280 Pros, HD 428, and Audio-Technica AT-A900X.) I used to have a pair of AD700s. I loved them to pieces, but had to sell them off to pay for some bills. As a result, seller's remorse...