Here are my $.03 About making styles.

1) the best keyboard for creating styles are General music ones. This is understandable because they have the best sequencers and sequencers and style makers share 70% of the functionality.

2) In order to make a practical and successful style, one must create one with 4 variations, each with its own fillin and at least one awsome intro or ending. (another set of intro and ending will be good)

3) based on 2, it is time consuming because you need to do each single part.

4) Styles are measured sometimes by the ending or the intro... that is what is difficult about it, one requires vast creativity and excellent musical skills

5) creating a style is more difficult than creating a song. There are limits and requires more use of tools such as quantization (which is a must), micro editing, trial and error...

6) Creating a powerful style on General Music keyboards is very easy and very powerful. The tools are there to help you every step of the way

I have a dream (actually two):

a) that we the community of arranger keyboards start producing our own high quality styles that surpass the factory ones and start trading with and helping each other.

b) In order to do that, styles must be standardized like midi songs and when they are standarized, style sequencers software is written to take advantage of this.