Originally Posted by Vintage Gent
As a backpacking enthusiast, I've had a fair number of wicking shirts. Their main drawback is the stink factor; they tend to hold on to body odors pretty tenaciously. Merino wool, on the other hand, wicks as well, is nearly as light, and doesn't funk up the jungle after a few hours of sweat. Don't know if they produce shirts that would be suitable for the links, but Ibex and Smartwool are two of the better makers.
I've found the opposite, at least as regards wicking shirts. My Under Armour and CK Coolmax, among others, usually smell much better after a day (or more, sometimes) of wear. UA in particular has its own unusual but pleasant smell that never seems to go away. Merino has similar properties in my experience. Just stay away from 100% cotton.
I got a cotton/coolmax "golf" (polo) shirt by Izod at Ross for around $15. They are cut humongous, but it seems to work well in hot weather. I guess most golf clothing is cut extremely large, though.
IIRC, there are pure Coolmax polo shirts made for law enforcement use that I considered ordering to try out. I think they were around $45 and had features to make them last a long time while still looking fresh, such as some kind of flexible stiffener in the collars. I didn't feel like ponying up for the experiment, though.