I've met a couple of successful fine art photofraphers who shoot Tri-X at 200, claiming much better shadows and beautiful negatives overall. My brief experience with Tri-X at this speed confirms this. You might want to try a couple of rolls and see what you think.
BTW For Tri-X at 200 I'm not sure that HC-110 dil B will give long enough development times. I use Edwal's FG-7 at 1:15.