I second your monitoring deficiency. I have a pair of Sony MDR V-600's and just got a pair of Senn HD-280's. Not that it helps having a pair of 10yo Sony's, but the 280's blow those away. In some respects they're even better than my M-Audio BX8's. You may not "need" to go so far as to get studio monitors, but I'd definitely invest in better cans.