The other 'trend' you might be able to see in this - though the 185 is a 33 while the 200 in my pic is a 35 and I was shooting wet aspen vs spruce, and at a different distance, is that the (petal retaining) TSX may not open as well or as broadly as the older XFB designs. And that seems to hold with what I have seen in the field as well as in tests.
I have also had good luck on game and test media with the old .257" 75gr XFB, .277" 130gr BTX, .284" 160gr XLC and .416" 350gr XFB.
