Logitech Clearchat decision!

Hey,i need to make a choice btween 2 Logitech headsets (i'm a freak of Logitech..G15,X-140,quickmessenger cam..)

Here's why i'm askin for a choice:

My actual Logitech Headset 120's (something like that) mic doesnt works no matter if i put it on the frontal jack plug or the back of my tower (ASUS P5K Deluxe Motherboard in an Antec 900 case,SoundMax HD Drivers)...thou the headset works

no matter the soundmax HD combination's with the amplifier or with the front panel config,it doesnt works,and if it does it lots of noise can be heard or the mic can be heard throu the headset but veeery low...if screamed at it...but if you hit the mic u can hear it great...

I'm looking now for a USB Headset...USB for better use and audio n stuff quality..also i believe the drivers are integrated and can be chosen in the windows' control panel's audio n voice devices option thing..

I'm between the Logitech's Clearchat Comfort and Clearchat Pro..comfort costs around 28€ and Pro 35€~ around..Those seems very good and also Noise cancel for the mic and seems the USB will work fine

i normally use my headset to play on Team Fortress 2 (i test my mic on TF2's voice test,not steam application's one since it makes a LOT of NOISE) and i want to use my headset's mic instead of...my logitech's webcam (wich can be heard low-normal sometimes)

Please let me help decide..i want a WORKING headset from the beginning (my actual headset's mic FAILED)

Thanks in advance