I pondered this same question myself and researched my manuals and what kind of shooting I do. I went high up on the Mountain and consulted with the wise one there also.
I bought 8lbs of HP 38 or W 231 works for everything for me. No it is not the barn burning magnum like H110 but I do not shoot those often.
Bullseye is another good one and I am sure others will have their favorites.