24/15 is awesome. I feel a little slow when wearing transitional (everything feels fine with brigandine), and I have to be very sneaky when it comes to archers (I can't chase them if they see me), but it is awesome, because I can take a lot of punishment. And since my favorite method of blocking is blocking with my body, I need this.
Currently, I am working towards 24/18 build. I considered 27/15 also, but I decided that I already hit hard enough - overhead one shots most of players, agi builds are usually oneshot as well, with proper speed bonus medium armored players also. I am using MW Danish, if that matters, I wonder what would happen with loomed Claymore, though.