I own the Sennheiser HD 25 1-II, and although I haven't used the Ultrasone Pro 750 (planning on getting one in the future) or any other headphone you have mentioned, I have used the Ultrasone HFI-650, so I'll compare the Sennheiser to the Ultrasone. The 650 has a broader soundstage, as in it is...

Are the V-Modas hard on the ears? In other words, do they start to hurt after a while compared to the Studios?

Sound isolation I have tried with the Solo's, and active noise cancellation is what I currently have and use with the Studios. Either is good for me knowing that sound isolation is better to cancel out outside noise and active noise cancellation adds a sound to the headphones. I still personally...

So as you can read from the title, I am debating on which kind of headphones will be my next purchase. I currently have the Yao Studio Beats by Dr. Dre and I love these headphones because of the bass it offers (I'm a bass head). I know they're better and less expensive headphones out there that...