Howdy Pards!
I have the Garrett Pro Pointer, and I believe it is the absolutely best handheld pinpointer on the market.
The only thing better, IMHO, is the Sun Ray inline probes like the DX-1. They run off your machine's power and circuitry. Considering the fact that ProPointer is entirely hand held, it is an incredible device for finding coins in the field. I love the one I have, never had a lick of trouble out of it.

Blessings,
M-Taliesin