Well, I don't own this car (yet), but I've driven both a bunch. My 2 cents, and I've driven manuals all my life (25+ years of driving).
I love manuals but I am unimpressed with this manual. For starters, there feels like there's too much distance between the gearing, so there's a big drop in RPM between gears. First gear is too touchy & jerky. The shifter feels sloppy.
Now I will admit a bias, as I've become spoiled from years of driving Miatas. But even my old B-series truck had a smoother shifting action than this gearbox. What it feels to me is cheap, as in cheaply made.
I have been waiting for the 2013's as I wanted a leather wheel and shifter, but I'm either going to have to reconsider the CVT or skip this iteration altogether.