Don't limit your choices to just those 2.
There are lots of other options:
AB Adventurebilt from Marc very, very good.
Todds costumes, gets good reports but I've never had one.
Wested, is ok for the less athletic it is not 100 cotton more 65/35 cotton/manmade, results in a slightly lower maintenance shirt, colour is a bit light and some details are a bit simplified.
The creme de la creme was the Noel Howard, if you can find one - buy it. It was the closest out there. He had an original to match for many years.
I've seen and felt a Mag, it's a little bit too brushed cotton for my taste, would probably make a good CS style.
The NH looks really dark doesn't it? Rewatch the banto wind "It Hurts!" sequence, you'll see!