Hey all, just got an Excal 1000 with the Excal 2 coil. Have been hunting in All metal and checking in disc when possible, seems to be working. As I'm new to the Excal would it be worth the cash to buy the Tones CD that are available? Or any of the books or are they just a re-hash of the other Beach an shoreline books. Any help would be appreciated. Particularly of interest is if thetones CD is worth it.