I use the Cobra 3, the nice thing about the digital compass is that you can recalibrate it when you move to different compass zones. The compass on the 3 is far superior to the original cobra and cobra2 and works at a tilt of 45 degrees. For these reasons, the any zone capability and the immunity from tilt, I far prefer it to a mechanical compass. I have moved 1 zone and find my SK7 sticks and I just cant get it at the exact tilt to read it effectively. Don't buy a Cobra 2 now the 3 is about $100.00 more and worth it. If you really like the mechanical compass it can be attached to the console or you could wear one on your wrist at home, and when you travel you could use the digital one.