It's been more common to see the familiar blue ceramic "X" shaped bottles of añejo than the "Q" bottles of reposado and plata but they all seem to show up and then disappear again with some frequency. I provided a link above to what was the XQ web site but it's been dead for a few months (2004) now and I'll probably take it out soon. I don't know what the future has in store for XQ but let's hope it reappears once again.