I purchased two Steven Alan short sleeve shirts at a sample sale yesterday. One was the single needle and the other was the reverse seam. They were $40 apiece, 70% off their normal retail price. I'm usually an "M" shirt size but these ones fit really big so I sized down to "S". I was quite surprised because I'm an "M" 99% of the time (6'1, 170 lbs, 15.5" neck, 40 suit size).
The "S" fit me very nicely however. The reverse seam is slimmer and nicely tailored, while the single needle had a softer fabric. Both had really nice patterns and were made in the USA. The tag claims that they are pre-washed, so I hope there isn't too much shrinkage.
For $40, I'm quite happy with the price-quality ratio and they will get a lot of service from me as casual shirts.
Given the comments from others about sizing, I'd be careful ordering something online unless you've tried a similar model on or find a site with a generous return policy.