Thanks for all the advice...and I will get that book you mentioned GB_Amateur...
I almost ordered a GB2 but after reading some of this and doing a bit of snouting, it seems that I may need to go with a PI. I don't have a ton of bedrock around here, but they say my river has been known for gold. This winter, she really went nuts raging over her banks, and there may be small gold lying around. The most that I can spend is about $2500 US. If you had to pick one detector within that budget... WHAT WOULD IT BE?