That Bongo stands out, even among Bongos! Wow! Dude, you scored a keeper. I was watching these on Sweetwater, went from 4 in stock to 1 in less than a week.
To be honest work has been bending me over the table alot lately so I havent had much time to delve into the sound and feel differences. I do the there is a sound difference though, just based on sound through my little box headphone amp. First thoughts are that the maple board adds a little brightness as does the alder body.
When I have time to sit, I'll do some comparison sounds by running everything flat on both and doing some sound samples