I've been using the XL Qck, I like it, but I feel like the size and shape isn't exactly efficient. Half my area is taken up by the mouse pad, but I don't want my keyboard on an angle, so it's a lot less versatile of a space. A friend of mine has a Razor pad that has more length to it, I think i'd really like to have my whole desk covered in a surface, so my keyboard can be stable too.