Has anyone been using the Presonus Studio One 2 Artist DAW?

I'm currently using Realband for processing and mixdown and am "getting there" but wondered how the Presonus Artist One 2 DAW stacked up.

Any easier for mixing, any additional features?
Is it worth the extra $100?

The reason I'm considering is that Presonus has the Melodyne (which I have) support as an add on feature (Control+M brings it up in the window) built in.
Any chance PG will implement that as well?

Lots of questions,too few brain cells.
Carkins