I have been struggling to get consistent and nice looking fonts across all browsers with the QuickSand Google font. Chrome and IE show very jagged and pixelated edges, especially at smaller font sizes. Zooming the browser will often make the artifacts disappear.
Here is a screenshot comparison of the issue with Firefox, Chrome, & Internet Explorer: https://dl.dropboxusercontent.com/u/29865983/imagehost/jsfiddle/QuickSandFont.png
Here is a jsfiddle reproducing the issue for experimentation:
#main-nav ul li a, #main-nav ul li a:link, #main-nav ul li a:active {
color: white;
display: inline-block;
padding: 19px 10px;
font: 400 12px/14px 'Quicksand', Helvetica, Arial, sans-serif;
text-transform: uppercase;}