Well, I think most people really like the session board. The sounds like pianos, guitars, are definitely better. Again, my only experience for this board is hearing demos. The bass/drums board I like a lot, though it has limitations. I don't know how good it would be for acoustic type folk music. The drums are pretty fat. Good for jazz, funk, and pop. You can make some nice user kits with a mix of stock sounds and expansion sounds.

As far as brass, I just feel that a wind instrument is really hard to capture; especially brass. The trombones are pretty good, french horns suck, too synthey sounding, and trumpets just don't have enough samples. For instance, no samples for doing falls, shakes, half-valve glisses. Plus it's hard to make a nice soft trumpet without totally sucking the life out of the samples. You can't make a nice brassy sound without it sounding all synthey and processed. The high notes are just not very real at all. Filters can only do so much.

BTW, I've had my synthe for almost 2 years, so don't be too impressed. I'm learning stuff from this board all the time.