I got tired of buying them only to have them not hold up to a saltwater environment. I had the Rapala and Berkley ones (not the lip-grippers, just the digital scales with the j-hook, the batteries were always dead when I needed it and rusted up. So I bit the bullet and got an authentic 'Boga Grip'.
It is the model 130, weighing up to 30 Lbs in 1/2 Lb increments. They go for $119, but I got it from ebay for $99. They can be sent in and get IGFA certified if you want to be that spot on.