First some background as usual, skip ahead 4-5 paragraphs if you'd like. Yeah, I like to be thorough so my questions aren't answered with more questions:
My most expensive headphones (also my first purchase) are my Senn HD 280's from almost 10 years ago (they were bought for DJing purposes and at the time I didn't have enough to shell out for either of the HD 25 models, regrettably). I used to think they were decent when I used them with my DJ gear and my rio karma mp3 player (R.I.P.) + CMOY but after loaning them to a friend for a year and then receiving them back in (at least cosmetically) bad shape I took a listen and was unimpressed. This might be due to damage to the pads (they don't form a good seal any more) or maybe the actual earphones, but I doubt it. I'd been almost exclusively using my Koss KSC75 for a few years and more recently my JVC air cushions for about a year and got lots more enjoyment out of those, not to mention they were infinitely more comfortable than the head clamping HD280's (I've got a big head), though with the cracks in the headband it's become a lot looser and more comfortable.
For christmas I got Superlux HD681's through my cousin in our little secret santa gift exchange and then my brother surprised me with a Fiio E7 (it was on my amazon wishlist, but didn't expect anyone to actually buy it for me!).
The HD681 (not B or F or whatever) and the Fiio E7 (with bass boost on the "2" setting) sound real nice together, and is everything I expected after reading all the reviews I could (though the reviews were probably for the other variants of the 681 line). Without the bass boost (or better yet without the amp), the highs are a little much, but that might be because I tend to turn up the main volume to get the desired level of bass.
The HD681 and KSC75 have really turned me on to that clean(er), up front treble sound with an acceptable amount of bass. I listen to a lot of rap, 90's and classic rock, and some electronic stuff and now I would like to revisit some other music with a more vocal focus.
Anyways, in the past I was stuck in the classic question of Sennheiser HD595 vs. Grado SR225. In the past couple years the Denon D2000 came out and I then looked forward to getting that one because it had nice bass and was highly recommended by people with similar music tastes as myself. Some say it's less than $200 now? I haven't really listened to any high end phones as I don't know of any headphone shops around the Los Angeles area.
I just want some new all-around headphones to take advantage of my Fiio E7. Anybody been in a similar spot and can give me a recommendation considering my appreciation for the KSC75, HD681, and getting the best bang for the buck? I'm open to anything $200 and under...maybe more if I can find a buyer for my uDAC. I don't mind taking baby steps towards an ultimate goal and I think I finally have a decent amp and sources for once. For what it's worth, I'll be plugging the Fiio E7 into an iPod Touch 3rd gen with an L9 line out or one of my computers using foobar2000 or audirvana, or once I get my vinyl rig going I'll plug it straight into my Kenwood integrated amp or DJ mixer. Somewhere along the line I may pick up the E9 if the E7 isn't enough or maybe trade in the E7 for the E11.