Basically, "What he said." (gonk)
1) How far are you taking the rest of your system, as in, are you going to spend enough to take all the components to near the nth degree?
2) Don't let the $2K difference 'impress' you too much. The Outlaw price is less mostly because of a different marketing/distribution/retail path, not because Outlaw was paying any less attention to quality and the resulting sonics. Some of the remaining savings can be attributed to Outlaw's design philosophy - leaning more toward what makes a positive practical difference over offering features many people wouldn't implement properly anyway.
A - n - d … Outlaw gives you 30 days to try out their gear in your own system. If you take good care of the gear while in your home, the most you’re risking is the shipping.
Unless you really need something that is unique to the Anthem, go with the Outlaw.