First mod I did! Well, after a debadge, of course.
Mishimoto MMSK-BK Black Weighted Shift Knob
It has a very solid heft to it, and I find it adequately corrects the reach issues I had with the stock knob. The spring is slightly exposed underneath the knob, but I haven't had any issues with it, and like the way it looks currently. It's not really black as they show it on the product page, much more reflective and more gun metal. I would say that it does get quite hot in the summer's here in NC, but cools down after being used for a short bit. I'd imagine it also gets quite cold if you live in a very cold place.