XHTML or CALS tables?

[Peter Ring]

Apologies for cross-posting.

I'm aware that this is a question that deserves ridicule, along the 
question 'Should I use attributes or elements to store data?' (according 
to the NOT the comp.text.sgml FAQ: 'Of course. What else would you 
use?'). Anyway, here we go:

Should I use the XHTML or CALS table model for structured documents and 
XML storage format?

I'm looking for gut reaction replies. Considerate pondering, evaluating 
all pertinent factors, does not seem to resolve into definite and 
convincing answers. Why of course, FrameMaker is part of the equation.

kind regards
Peter Ring