Electric pianos, are good alone, great when layered with my Roland XV3080. Guitar sounds are sparse, concentrated toward acoustic, but they are passable. The drums are suberb. They are imaginitive and work well. They are leaned more toward tehcno field, but thier are enough to sastify all musical disciplines.
Velocity is fully programmable.
I have not had any problems with midi messages. Rhodes are decent, but Rolands are better. Wurltizer is very good. Atmospheric sounds are the best in the industry, always have been The effects are extensive. For a combination, you get 5 insert effects and 2 master effects.