Ah, they're just not for everyone I suppose. Still one of my favorite cans. They're not without their drawbacks or trade-offs though. The bass is rather boomy, and I can see where the criticism about their mids are coming from. That being said, being what they are (super bass heavy cans focusing almost purely on bass quantity), they're definitely not as bad as some people are making them out to be, in my opinion.
Rule of thumb on head-fi: whenever someone says something is "utter crap", "worst headphone I've ever heard", "the best evva", "these turns water into wine" or "I can divide by zero, I promise", just ignore them. Exaggerations run wild on head-fi, and no headphone is flawless.
I find the X10/XB910 to be *very good* for my needs, and is a well used headphone, even among "the better headphones" in my stable.