I was to renew my PADS license and was very excited when when I found out that Altium is offering Circuit Studio. PADS has so many bugs and such unpredictable behavior. At any rate I downloaded the Circuit Studio trial and as former D09 user I was able to quickly adapt. But I will say that there is very limited documentation on on Circuit Studio so I did have several questions on how to use some of the features but Marisol from Altium was REALLY GREAT in walking me through using the tool and answering all my questions. I was amazed at how quick she would respond to my emails. The support I received during the trial was truly a first class experience! I am very happy with my decision of having bought Circuit Studio and look forward to the future updates as the tool matures.