I have an old Tif, 11 yrs old and still works great. I don't know if new technology has improved on anything. Also have used an ultra sonic detector with good results.
"War is cruelty,and you cannot refine it." Sherman to the leadership of Atlanta prior to burning the city.
"Common sense is the collection of prejudices acquired by age eighteen."
Romney campaign: "We're not going to let our campaign be ruled by fact-checkers,"
Lindsey Graham: “We’re not generating enough angry white guys to stay in business for the long term.”