The broadhead you use is going to depend on the set-up you use. The arrow you shoot, the poundage of your bow, the requirements of the state you hunt, and what your preference is. You just have to try some and see what works for you.
I personaly use thunderhead 100s. I have a buddy that swears by blood trailers. I also have another buddy that will not use anything but Muzzy 80grain.
Its all in what you like and can shoot consistant with.
Out here in Colorado, and in the units that I haunt, it is a tricky game to figure out how far to pack in on a rifle hunt. You want to get away from the masses that have moved game away from the roads but might want to stay close enough that you are taking advantage of the animals forced movements. There is no universal distance but I like the 1.5 to 4 mile range for day hunts where I am not planning on bivying out. This keeps you in that productive buffer zone where the animals are really...