Of course you should hire the best dev you can find (though I seriously doubt its possible to tell who'll be the best for you - both in terms of skill and, as i

Of course you should hire the best dev you can find (though I seriously doubt its possible to tell who'll be the best for you - both in terms of skill and, as importantly, personality). Personally I don't believe in the x10 rule. It might have been true when you had to code your own servers in Lisp to build a website, not when you build a Django CRUD app. In any case, when you mentor someone, they may turn out to be that top %10 dev.