Hmmmm...I might suggest your next Bounty Hunter to be a Quick Draw II, or a Land Star. These machines will add some new features like...depth indication, auto-notch, variable notch, 3-tone audio feedback, and target ID display, and Manual Ground Balance...Also a no-motion ALL-Metals mode for better pinpointing...A good pinpointing probe is also a great addition to your arsenal...I use a cheap Teknetics probe, but I would not recommend it to anyone else, as it is really not worth the money in my opinion...If I had it to do again, I would have chosen a Vibra-Probe 560 or 570. check out the site below to compare detectors:
http://www.detecting.com
Hope this helps you decide,
BH-LandStar
P.S. As a final word...if your current detector is finding you what your seeking, there is no real reason to upgrade...More expensive detectors just have the bells and whistles that can make life easier, or confuse the heck out of you, depending on how they get used. I sometimes wish I had started with a detector without a display screen...I tend to pay more attention to the screen than I do the sounds the machine produces, and I feel this was a partial mistake on my part.