Hi,
First of all I CANNOT and DO NOT speak for Presonus...That said, as an original S1 user that upgraded to the full monty I can tell you that the MASTERING suite ALONE is worth the price. I have never looked back. If you are vigilant, and keep watching, you will find some AMAZING deals non upgrades! Sign up for the Presonus news letter which gives you a heads up on these deals (hint) USUALLY there are holiday and year end deals tom be had!