Wanted a narrow/long/tall box to replace my old Cascadia 1100, but the closest to that had the crinkle finish and I wanted smooth (sticker canvas!). I love the opening/locking mechanism compared to the other, older style. Very slick and confidence inspiring. Since the XL was essentially the same width as the L, I went for it and am happy I can have it on my '08 Subaru without it hitting the lift gate (pushed as far forward as it will go). A very solid box. Expensive, but I sold my old box to a friend after 11+ years of use, so I'm willing to pay for quality.