hi i have no room in my atx pc for a sound card 
so wanted a usb sound card for gameing not for music
im getting the Sennheiser G4ME ONE Premium as i hear theses are the best and like the look of them
 
ive been looking all over the internet but cant find much so ended up on here 
 
been looking at the 
http://www.amazon.co.uk/Creative-Sound-Blaster-X-Fi-Card/dp/B003RRY3WE/ref=pd_sim_sbs_computers_5?ie=UTF8&refRID=0GAP09B1R09P6V7VEFMS
http://www.amazon.co.uk/U7-Soundcard-Integrated-Headphone-Amplifier/dp/B00CP53ML2/ref=sr_1_7?s=computers&ie=UTF8&qid=1397780545&sr=1-7&keywords=Asus+Xonar
 
will one of theses be adequate give me full sound quality with my headset? 
if not can you recommend a usb sound card? 
thanks hope you guys can help