Magellan Maestro's 4000/4040 GPS navigators are now available on Amazon.
The main difference between two versions is that 4040 comes with text-to-speech functionality and hands free bluetooth calling.
The 4000 doesn't.
Magellan Maestro 4040 costs $500 and Magellan Maestro 4000 - $400. You can also find Maestro’s on Magellan’s website.