After looking at a direct replacement headset microphone from line 6, I settled upon the T bone head Mike, mainly for cost reasons , but also because of the comparable specifications it shared with the original headset Mic I was using.
The T bone Mike has been a great purchase. Cheaper than the Line 6 and in my opinion better quality, the Line 6 suffered from a bit of feedback problems when used along with an acoustic guitar set up, but I've had no issues with the T bone.
Would buy this product again, and I'm currently considering purchasing the T bone lapel Mic.