I don't know if they're one and the same but I was talking about the Roland SD-50 Mobile Studio Canvas module. It's probably one of the most used hardware synths on the market. The sounds are very real.
Back to nuance. That is something that has to be done by a human. I don't know a thing about EZKeys. They may put those feelings in their fonts for the piano. It's all in who originally recorded the midi and what instrument was used.
My broter in law has several synths. They are the best made at the time he bought them. He's also a pianist and uses cakewalk as his sequencer. The sounds coming from that thing are awesome.
One of his keyboards is a Kurtzweil (spl?) The sounds that keyboard can generate are unbelievable. But the way the music sounds is strictly by the way he plays it.
Again, to get what you want out of midi is going to take work and knowhow. I've created several good pieces using the "Piano Roll" button.
One example was a song I redid a couple of years of ago called, "The Sultans of Swing". Altho' the original midi was created by somebody else I went into it and made the lead guitar do things that weren't put in there by the composer.
Here is that song if you'd like to hear it. I hope you enjoy it. Remember, I didn't compose this. I'm good, but not that good.