From what I can see, the Accu-find is the same as the Bounty Hunter.
I have used 3 PPs: Cen-Tech, BH, and MineLabs.
First off... The Cen-Tech and Bounty Hunter are not in the same league as the MineLabs for sensitivity, ruggedness, adjustability or quality. The ML is a beast. So no comparison will be given.
The BH has a sensitivity adjustment, but mine has to be turned down about 80% just to stop it from going off. It seems rugged enough, and does have about an inch from the tip of side sensitivity. That being said, you have to be within a 1/4" or less for it to go off.
The Cen-tech, though cheaply made (and not built for the purpose we are using it), has better range (about 1") at the tip and sides, but pretty fragile by comparison. It too needs to be turned down (about 60%) to stop buzzing.
The CT has more sensitivity adjustment than the BH, but the BH is better built.
All that being said.... with careful use, any of these will do the job.