Echo what Chris said. I spoke with Fisher a few days ago and they indicated that GB2s should start becoming available again at the end of April / beginning of May... they got wiped out by a huge order. I actually like to have both with me and decide which one to use when I get to my hunting spot... Like Ray, I have found areas where the GBPro is not bothered by hotrocks at all while the GB2 goes crazy. Then there are the areas where the GB2 can balance out certain types of rocks that keep the GBpro noisy. It's all about having the right tool for the job, but if I could only own one VLF, it would be the Pro. Not that the GB2 isn't more sensitive, it's because the Pro is a lot more versatile.