A:AnswerVG-2 equipment detects low frequency signals "leaking" from some radar detectors. You are good the Max is undetectable by VG-2. Firmware updates (there have been several already) are free. They are currently on 1.8. You will use Escort "detector tools" software to do this. You can use PC or Mac.
A:AnswerI travel about 25000 miles a yr and passport is the only detector I would own
The difference between max and max 2 is really in your budget
They're both perfect and updatable