[JLibourel]

Broadcloth, I'd say. I was just talking to David Mercer about this the other day, and that is his opinion. A straight-collar white broadcloth shirt is excellent with a suit or sport coat for a dressier look. Unbutton the collar, pull the collar stays and roll the cuffs and it makes a great-looking lightweight shirt with khakis or jeans.

I would second the opinion about why one would need such versatility. I'm a big subscriber to the old maxim, "Variety is the spice of life." I mean, I've got shirts in broadcloth, royal oxford, pinpoint oxford, twill, oxford, end-on-end, chambray and flannel (and I'm probably forgetting some), and I cherish them all.