Hi J. Larry,
I'd have to say the PREMIUM style on the IDC site are better than the internal styles. There are some non premium styles that are equal to what is in the keyboard.
The selection is quite diverse with some rock, funk, country, and others. I think the prices are from 4.95 to 6.95 per style.
I've downloaded about 1/2 dozen or so that I thought were really good and should be part of my collection.
On the whole, I think it's nice to have this option, just that Yamaha really isn't exploiting it very well. On my keyboard with a wireless I-net connection, it's slow and frustrating to navigate through all the screens. Then when you get to a screen, you can preview a style which downloads it into your keyboard, and it plays for a few seconds and just when you start getting the overall picture of how the style sounds, the demo is over. You then need to navigate back to the style selection screen and this take time. I'd like to see a better interface where you can see multiple columns of styles on a single screen with the ability to preview "in-place" without having to navigate all over the place.
Maybe Yamaha should contract with me to re-write the interface!