Granny Smith is where it's at. Always was my favorite. A little sprinkle of cinnamon on them makes a great snack
I've only had two knives that I made for a relatives that was in MC. Both took a wicked sharp edge with minimal to no bur. 3V has always been harder to sharpen. Maybe I got a bad heat treatment but it's always felt mushy and didn't take an edge as well. Then it lost it keenness fast. But did hold a serviceable edge for a while. I requested D3V protocol but I don't think it was done. I think it was left a little on the soft side
The MC was perfect. Jerred did the HT and looked like he nailed it. So I think heat treatment will be the biggest difference between these two options
Oh, and for Granny Smith, the more tart the better