Difference between the free/home/business editions?

Hey guys, I'm just wondering what exactly the differences are between them. Are there any additional features or anything in the paid versions, other than better support? (this goes for other Piriform software also).

I'm planning on paying for the home edition regardless. This is a great piece of software and I would like to support it.

Thanks.

See if this helps: http://forum.piriform.com/index.php?showtopic=34118

As for CCleaner:

Free = Free

Home = +Support

Business = +Support + Business and Network Edition (for domains etc)

& by support he means direct contact with development team, instead of listening to the knowledgeable loonies (including myself) here in the forums