Its been a while like years, but White was the name back in the day. They have come a long way with the electronics, but it still takes a pretty good ear to figure out what the beeps etc are. Look around they use to rent them out. The cheaper ones were a load of crap as they wouldn't tell a bottle cap/pop tab from a penny. If you are rooting around an old mine, watch out for overgrown ventilation openings /holes and wood planks on the ground covering them. Number on hazard on hunting around mines, read a story of a guy that knew better he worked for the state marking the old mines and openings. walked on top of one it collapsed and he fell 30 feet and broke some bones was in the hole 3 days before they found him and pulled him out.
Hit one of the larger big box book style store for the magazines and look thru them. Buying one with out hands on will be a crap shoot.
;D