Just an update . . .
I tried the Shedrow from Greenhawk, the price was right . . .
I did have to return them and order a larger size than I usually do to get the front/chest area to fit (it didn't meet in the middle, buckles would do up but there was a gap, and my horses are not chunky or wide in the chest).
But once I had a larger size they fit really nice in the shoulder and neck area, were a bit long over the butt but still okay. They didn't rub anyone's shoulders or withers, didn't roll, and are still intact (straps and all) after the summer, so I am happy.
I just know now that I have to go up a size if I order these again.