People that have a great job and have done great projects will ask you for more and can easily leave you if they get bored. I think a great recruiter is someone that gives a chance to people that show other signs of "success" besides pure measurable performance. Especially, I think you are better off sometimes hiring people willing to learn and adapt.

Of course, it is easy hiring the 1% when they are already in the 1%. Much more difficult, and much more valuable, is hiring them when they are in the average bucket or they are not even there yet (i.e. people looking to move into programming).