I've downloaded 3 of the premium styles since a few on here said they were very good. The demos really should be longer and show off the different variations. Yamaha are not providing enough of the style to warrant a purchase in most cases. The 3 I purchased were mainly because I liked the intro and the feel of the style, but these were really a shot in the dark as to how they actually progressed using the different variations and fill ins.
Come on Yamaha get providing a better service to the T2 owners and make the demos longer.