You really have to try the MS Naturals out yourself for a week or so. For every person like Dunkin there is a person like me who absolutely hated them. After a few months, I bought my own keyboard for work because all our stock room had available were the Naturals.
(it isn't just a 'do you like ergo boards or not' thing, it is a specific shape/angle/feel of the MS Naturals - I mean, you can see my avatar is the old Apple Adjustable, which I loved)