Some say the tone is more aggressive or open with maple and sort of softer and round with rosewood, but this has to be very hard to tell i guess ?
The above descriptions are true. To me, the difference in tone is not hard to tell at all. I personally notice a big difference between the sound of maple fretboards and rosewood fretboards (I've had identical EBMM basses whose only difference was the fretboard wood.) I always preferred the rosewood ones.
It's easier to EQ a little "edge" into the sound of rosewood fretboard basses than to try to add natural warmth to a maple fretboard bass, at least in my experience.
Today i found this one, a real beauty indeed
MUSIC MAN BONGO 5 HH STERLING SILVER Vy - Svensk International Cyberstore
If the classic stingray 5 will not show up in the store in a few days
i think i will go with this one instead.