I have read many posts about the M6 being notchy, clutch being too heavy, blah, blah...
I mean really.
I driven lots of manual cars in my life, American, German, Japanese, Italian, Swedish...and I find the HC box to be excellent.
I had an original MR2 and that shifter was touted as being extremely slick. Two 944 Turbos, both with perfectly servicable sticks, but nothing amazing. And the setup on the NSX, again everything on that car was cooed over, including the shifter, but again nothing particularly amazing to me.
The HC shifter and clutch are stout. They seem to perform best with firm and accurate actuations. I've never had it pop out of gear or do any other unsavory behavior. Frankly, I love it.