DR_obertsSorry for the late reply,
While built with the same end user in mind, the CAD GXL2600 is a more professional sounding mic. It is based upon their 2200 series microphones, has a gold sputtered diaphragm, larger cardioid and a superior capsule. That is not to say the C01U is not a good mic, it most certainly is. However, the CAD GXL2600 will give you in my opinion based upon its specs and upgraded design, far clearer and accurate voice recording.
Also, the CAD mic is designed to be plug and play with whichever computer, Mac or PC, and whichever software you are using. So we shall see in the end after people receive theirs and let us know.
I know I was a bit tardy in my response, but I hope it helped ;)