What ever has more searches and what ever has less competitors. Decide on your own, you can optimize for both of course.
June 29, 2012, 4:11 am
Upvotes by No One
I suggest you to optimize both. Personally I even optimize mispellings since a typo can always appear when a regular user search google for a thing.
Just think as a potential visitor and not like a marketer and you will find your answer.