Looking for new headphones, I picked up Hifiman HE-300s, and I didn't like how they sounded (I returned them today). Not quite as detailed as I hoped, maybe a bit dark. I'd like something a bit brighter, not much bass, and really detailed and forward mids, and maybe highs. I like my Sennheiser HD428s, but the detail isn't quite there and they have next to no soundstage. Soundstage is important, I was looking at Sennheiser HD558s and HD 598s, and AKG Q701s.
Open doesn't matter, and if it would give me a better soundstage, I'll go for it for sure. Budget is 150-270$ I do have an amp, a Fiio e10, nothing too amazing, but it works. I like the feel and sound of my 428s, but again, mids and highs are a must, bass can be next to non-existent for all I care, I just don't want anything close to resembling a V-curve.