Sometime in the next couple of months I'll probably be buying a new detector so my friends could come with me on hunts and use my current one (Radio Shack Discovery 2000/Bounty Hunter Lone Star). I'd probably want to spend around $400 - $500, I wouldn't be using it in the water at the beach or anything, I'd just want a good quality detector with a pinpointing feature (my current detector doesn't have one). What would be some good choices?