buy an AKG/Sennheiser headset for about 100€ and buy a table-mic.
pretty much this. i do it like that (well ive got more expensive headphones lol) and its just so really chilled, especially because the headphones will be so much better.
Sennheiser aren't really made for gaming, and they're pretty expensive. Steelseries and Razer makes good gaming headsets. I have a pair of Siberia V2's and I'm very pleased with them