I was directed to this site:
vhttp://www.maz-sound.de/index.php?show=mpcs&id ... page_id=59
and there i download the files to do your own test.
I made the test with some sampler that was not included in the Maz-sound site, and found interesting the comparison between KX drivers & Creative ones when managing soundfonts.
Here are the results, any comment is welcome:
15khz sine wave test
sweep test:
tambourine test:
you need scroll the images since they are a little big.(the first window are the kx ones, the second, creative)