A big "Hello" to everyone. I'm a Newbie to this site and was wondering if there's a Product Matrix that would allow me to compare the specs and features of the different Arduino products, also, any suggestions for navigating around the site would be welcome as everything seems a bit intimidating. Thanks.
I think there is, look on the Products page.
You really need to review the Atmel prccessors being used.
The Atmega328P, '32U4, '2560, and 16U2 (programmed as USB/Serial interface) can be found here
And after that, navigate within Atmel for the processor used in the Due.