Thanks for the question, and of course, there are a lot of dynamics at work, and the results change from area to area, as real estate is so localized.
And Yes, I agree that a combination is most effective.
However, it is always very surprising to me that I get so many calls about the few listings I have that lead to Buyers of other properties, that I am focusing on getting more listings. Half the time the inquirer is not the least bit interested in the house listing they found me through, but instead, purchase another home.
Thanks again, because your question also gives me focus!