The Mars pro (or Pro M) is a good mid range kit which holds its own against other mid range kits like the Export Select and the Stage Custom,
If memory serves the Mars Pro is Basswood/Maple/Basswood - so the drums cut and still maintain some of the warmth of Maple.
One of the many kits I own is a Mars Pro limited edition - which is an all Maple kit (in essence Orion shells) with the Pro M hardware. It is a great sounding kit and the hardware holds up fine in a gigging environment.