If you want to get even smoother in your display, every input button has its own id and can be addressed individually in the stylesheet.
Add this to your stylesheet to hide the top radiobuttons, keaving only the "please select" message:
Code:
input#attrib-23-105, input#attrib-24-103, input#attrib-25-101 {
display: none;
}
This will apply to those particular attributes on every product where they appear.
You can look up other radiobutton ids in view source or with the Firefox Web Developer "Display Element Information" tool.