Is it better to define Scoping (ScopeType.PAGE) at class level or field level ? Performance wise which one is better ?

Class Level Scoping
@Scope(ScopeType.PAGE)
public class Dummy {
@In
private ObjectA obja;

@In
private ObjectB objb; /* This is the one which i want to define in page scope */

}


At field level
public class Dummy {
@In
private ObjectA obja;

@In(scope=ScopeType.PAGE)
@Out(scope=ScopeType.PAGE)
private ObjectB objb;

}