Hi,
I've been using one for a while now. It works out pretty good for me. The depth is limited, I get 1" on a quarter and about 3/4" on a dime. Now I did take it apart and adjust the internal pots a little. I have issues with the battery cap popping off, but that can be fixed with a touch of electrical tape. I have really had no problems with it and the battery lasts a long time. The shape is great too, it's easy to handle.
Most people will tell you to get a Harbor Freight Cen-Tech, or the Garrett Pro Pointer. The Cen-Techs can't be beat for price, but they don't hold up that well. They will get a bit more depth than the BH. The Garrett seems to be the top dog for depth and durability in the $125.00 range.
That being said, if I had to do it all over again, I'd probably get the Harbor Freight pin pointer then be looking at coils or accessories with all the money I saved.