Harold M Hallikainen wrote:

> >     By the way, Marlin P. Jones (http://www.mpja.com/) has crystal
> > oscillators
> >     for $1.00 apiece. Why use a resonator?
> >
> >
>
>         Cuz they take less board space and we get them for about $0.50 each...
>
> Harold

...And also because they are more resilient to mechanical shock.
Graham