David,
I'd be very interested in hearing of first-hand experience with either the DataColor Spyder systems or the X-Rite ColorMunki systems.
Although there was no reference to DataColor in the webinar, a brief mention of the "superiority" of a spectrophotometer (ColorMunki) versus a colorimeter (Spyder??) made me look into this issue. Apparently (Wikipedia), a colorimeter uses filters to sample for specific parts of the spectrum while a spectrophotometer does not.
Anyway, my circumstances require that I be in research mode, rather than purchase more. So I'm not in anyway advocating one system over another. I just felt that I learned more about Color Management from the X-Rite series, over and above their product promo.
Also, although not webinars, the articles at Eizo's site are also very instructive on this topic.
E.g.
http://www.eizo.com/na/products/coloredge/matching/index.htmlhttp://www.eizo.com/na/products/coloredge/management/01.html