Came across this, so thought I'd post. Am only just evaluating the quality of the software myself, but reviews seem positive.
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Why spend money when you can get it for FREE, OzBargain style!
http://forums.whirlpool.net.au/archive/1474990
Copy and paste, verbatim
As you can see AVS is just repackaging the open source and charging a premium for it and giving it a better GUI.
I recommend those free version and make $2 gold coin donation to each, that will help the programmers to make better products and even better GUIs in our future FREE updates ;)