PCStitch 10 is no longer supported (nor are the previous versions). That makes any comparisons difficult.
The best I can do is give you this link to the "What's New" page of PCStitch 11. I do note that it is the only version that supports Windows 10 as far as I know. The others may work on Win 10 but unofficially.
One point -- issues have been reported with the Windows PDF creator (virtual printer) with PCStitch so is not recommended. Other virtual printers, such as that within Foxit have had no reported issues of which I am aware.