When to hand XSLT off to a specialized box (was: hardware xml / xslt)

So here's a question for the Datapower/Sarvega/XSLT-in-box folks:

	At what point does it become cost-effective to consider such a 
solution?
	- Running an intranet where the data is XML and you're using XSLT for 
presentation.
	- Running a site where not only the local data is in xml, but you're 
handling feeds in RSS, ICE, and NewsML.
        - Running a busy news site (NYT, /., BuffyRumors)?
	- An eCommerce/enterprise application using WebServices to bridge all 
the components (SAP,Credit Card processing, etc.)?
It'd be good to have a sense of when to let go of software and embrace 
the black box in the server farm.
Thanks.

----
Bill Humphries <bill(_at_)whump(_dot_)com>
http://www.whump.com/moreLikeThis/


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