It is so hard to find what is best for your horse because they are all so different and what works for one horse does not always work for another even with similar confirmation. I just know that I was not at all happy with my cut back pad. I wonder if you put the Mayatex pad UNDER the gel pad, if it would keep the cut back part from sliding down on either side of the withers like mine did. When it did that, I felt like the "U" shaped part of the cut back was digging into the withers.
It is all hit or miss. I hope you find something that you both are comfortable with.