I have an MGW knob and LOVE IT. It is not like the one you have pictured. I have the gripper knob. You can find pix of it on their site. I have the gun metal gray version on top of a Hurst short shifter.
I'm also a MOMO person. Currently I have a Kirban billet aluminum shift knob, but I plan to replace that with a MOMO SPHERE ALUMINUM Shift Knob. This I KNOW will fit on a C5. (See e-brake handle thread.)