The only downside is that the pianos take a while to get used to.. They are great sounding, and cut through a mix quite well. But they are all in the style of a Steinway grand piano, so if you are a Yamaha piano fan, with punchier mids and crips highs you may feel the pianos in Hypersonic a bit dull. But with some tweaking and adaption you get used to them. I still haven't gotten a good blues sound out of it, but I'm still learning, the editing capabilities are vast.
Effects both reverb and chorus respond to midi controller events, you may also use other effects, 4 per track, and 4 global effects, all things in Hypersonic can be controlled through midi events, using the "Learn" function you can assign different controllers to different things..
It may seem that I'm working for Steinberg, but I don't

Maybe I should apply to work as a "Hypersonic Arranger Demo Guy"

Doc-Z