you can consider the V-Moda M100 w/ the XL earpads, since you are familiar with V-Moda brand. Considered to be one of the best over-ear portable $300ish basshead headphones... meaning good sound quality & clarity along with emphasized good quality bass. The M100s bass has good extension, detail, and texture. The bass notes are 'tight' with minimal distortion/bleeding into other parts of the frequency response for its 5-10ish db bass boost. Obviously, there is still a bit of mid-range recession due to its v-shaped sound signature, but it is a very well-done v-shaped signature & if you are looking for a strong quality bass response, not just the loudest bass possible, I think you will be very happy with these.
edit: another quality portable bass-head options would be the ultrasone pro 900.