You first have to decide if indica or sativa is what you want (WW=Sativa and Aurora=Indica) both of these are top grade herb and will have higher than most THC content. Then you need to figure that since you need to keep your plants small throughout the grow, which one will produce better as a smaller plant and I think you would be better off with the Aurora since indica's grow smaller to start with and you could prob grow it in a single cola easier and have one nice sized bud to deal with instead of several smaller bud sites, does this make sense?
If you had a little more room and could go taller then my personal preference is WW, but I have some Aurora right now and have to say this is a very tastie and kickin bud and I would not be disappointed in the least if I were in a similar boat (cause I would do the Aurora due to size restrictions).