Regardless of the looks, Sennhieser headphones will make anything else sound like total bullsh*t once you try them. If you use a separate microphone, the HD 280s or similar work very well, and are reasonably affordable headphones.
As far as computer mice, I just use a Logitech M525 - nothing special, but always dead-on accurate and reliable, while still being light enough to snap to targets very quickly. Batteries last around 6 months. I've never needed a mousepad with it, and I've played trem (and fairly well, lol) with it on my lap.