Eh, I’ve seen the “Cornwall” collar up close and didn’t find it appealing. The collar points are too short for my tastes and I prefer a standard “Ainsley” spread collar.
No opinion on my end about the “BrooksCool” fabric. I tend to only stick with “must-iron” shirting. However, there’s an AAAC thread that discusses “BrooksCool”:
I did a little checking, because I was curious about what makes the BC shirts different from the regular non-iron shirts or the classic oxfords.
1) They’re made from a slightly lighter weight cloth than the classic, must-iron oxfords.
2) The main difference is in an update to the non-iron treatment process. Previously, the non-iron shirts have been fairly bad at absorbing moisture (sweat), which has made them quite a bit warmer to wear than an untreated cotton shirt. Brooks (or their Malaysian vendor) has treated these BrooksCool shirts with a softener that counteracts the hydrophobic properties of the non-iron finish and makes them much better at absorbing and evaporating moisture. Hence, a shirt that is still non-iron, but which breathes better than the old versions.