In that price range I disagree with the above post, that only really becomes a good option once you get into the $200 range, headsets are still the best value for money under $100, as a modmic will set you back around $20, and there are not very many great quality headphones for $80...
Get the HyperX Cloud IIs for around $90, they're good value and have great sound for the price with a solid mic.