I have both the AT Pro and The Makro Racer 2. The Racer 2 in my opinion is better for all around detecting and is far superior on salt water beaches if that's part of your criteria. It's not submersible like the AT Pro though. Read Terry Soloman's fantastic review, and you should have no trouble deciding. A friend of mine has the Gti 2500. To me it looks bulky and outdated and cluttered with stuff you don't need, and honestly that thing is flippin ugly!