Yeah, so far so good with the nanocube 6. I've heard that heat can be a problem with them, but so far so good. Plus you can easily reverse the fans to keep it cooler. So far, I'm quite impressed with jbj's new line of the nanocubes. Very few problems in comparison the AP's imo.
I got it at The Fish Bowl in longwood for a pretty awesome price of 89.99. Can't find it anywhere (even online) for that cheap...