Hi Andy,
There is a patch available for version 2.0e that corrects some issues.
http://www.xara.com/downloads/xtreme/patch2_0f.asp
As to whether or not to upgrade, only you can decide if it is worth the cost.
I am not a professional graphic designer but I upgrade because I love the program and enjoy using the new features.
In regards to Flash or SwishMax, I find SwishMax easier to learn.
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