Hi all I am new here. I have been reading post here for some time now so I am jumping in. From reading past posts I am going to get myself a new Tesro Cilbo detector. But my question here is I want to get my grandsons (ages 13 and 11) a good starter detector that they won't outgrow quickly. I am leaning towords the Compadre. Or should I just jump up to the Silver Umax? Any help from you experts would be appreciated. Thanks-Frank