OEM FK8 Knob. Perfect fit on an DE5 Integra Type S with an aftermarket shift boot collar. Much better than stock given the larger, spherical diameter. Just feels right.
I never was a fan of the long skinny stock 2009 SI shifter. Read a ton of reviews/forums and am quite satisfied with my purchase of the silver 2017 civic type-r round six speed shifter. Installation was a breeze and it looks fantastic with the stock SI interior trim. I wish I had made this purchase sooner.