What is the difference between all the dress shirt brands available?

Crazy Gopher asked:


I was shopping the other day for dress shirts and realized there are many brands (VanHuesen, Arrow, Geofrey Beene, IZOD, Calvin Klein, Tommy Hillfiger, Hugo Boss, to name a few). These are all quality dress shirts but prices vary from $40-$125. What is the actual difference between these shirt brands, and which ones are considered low-level, mid-level, and high level?

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