Just took it for a test drive and decided I like the RAZO knob a lot. The delrin one was tear-drop shaped, but was also a pretty big diameter. This one is probably about as tall as the stock knob, but a little smaller in diameter. I like the shape, too, as I seem to naturally want to grip the shifter from the side and my hand fits over this well. The additional height actually seems to be a positive for me. I'll probably just have to pick up the CS short shifter to compensate.
So, if anybody would like a short delrin knob, I'll probably be posting mine for $15 plus shipping soon. Same with my stock shift knob.