Your lightweight, supportive, well shaped pads are going to come from 5 Star, CSI, Supracor, Impact Gel, some higher end Pro Choices, etc.
I use a Supracor, and my trainer uses CSI's, and they're awesome.
What shape is the skirt on your saddle?
What is it that's not fitting how you like? It it just not laying correctly across the back, or??
I have a couple of suggestions, but I need a little more info on what you're not liking before I give a couple of names to you.
"You're just as sane as I am."~Luna Lovegood.