I think what is more important than the blade shape is the handle shape, how easily it is carried, and the ease of opening. I absolutely love the shape of the cold steel voyager's blade, and it's handle is very very comfortable, however, it was one of the most uncomfortably opening knives I've held. The clip on these knives were too small for my liking and put the knife in an uncomfortable position in my pocket. The mini-griptilian I picked up in 2002 w/ a thumbstud and a CE blade was another that wasn't so much difficult to open as dangerous. the pad of my thumb came dangerously close to the serrated portion of the blade when i opened the knife on every occasion.
handle the knives. if both are comfortable in your hand, and are easily opened for you, then decide on the blade shape. it won't really matter if drop point or tanto, if you never carry the knife because it isn't comfortable to carry, hold or open.
that said, I would avoid the chisel grind personally. I don't find it very versatile for mundane cutting chores.
pete