My recommendation is to get a good pair of headphones and a mic separately.
I recommend the ModMic. Ive had it for about a half a year now and I love it - http://www.modmic.com/
(only available for preordering the modmic 2.0 I believe)
Or a Zalman Zm-Mic1 - http://www.amazon.com/Zalman-Zm-Mic1-Sensitivity-Headphone-Microphone/dp/B00029MTMQ
I know a LOT of people use this.
As for headphones, I dont really have much experience with them. I would go to a site like Head-Fi (http://www.head-fi.org/) and read up on reviews. You can search by quality, price, value, etc.
I own the Audio Technica ATH-AD700's (owned by the likes of b4nny, tyrone, and shrugger. AND FOX TOO). Really great headphones, very satisfied with them. I managed to get them on sale for 90 bucks! - http://www.amazon.com/Technica-ATH-AD700-Open-air-Audiophile-Headphones/dp/B000CMS0XU
EDIT: Fox beat me to it :P