Besides waterproof what detector company has been all that innovative besides garrett? The at pro/gold machines have been the only ones to come out in the last few years that changed the bar in the priceline. Ergonomics is the only thing I can see that any of them have done outside that to make there detectors more appealing. You only have 4 inland waterproof detectors to choose from at pro/gold, tesoro tigers hark and ctx 3030. The latter being 2400 bucks. Tesoro has a player in that catagory in the tigershark. In the seperation department very few detectors can match a tesoro in iron laden sites. The Vaquero and tejon are two of the deepest machines made. I have one old homestead site that has that I have recovered many nice old coins and relics from with the vaquero and tejon. This site is littered with iron, bits of tin flakes, 22 bullet casings etc. Went back over it with the deus, f 75 and racer and found only bullet casings. The Vaquero or tejon with the 5.75 concentric in these types of sites will pretty much clean them out of anything good so that tells you something about the detectors and how well they work.