Back in the early days of the excitement over the Cree XR-E, somebody on here examined a Cree star board and determined that the heat transfer was really poor due to a layer of non-conductive material between the heat pad and the alu core. Just wondering whether things have improved at all with Cree aftermarket stars (so that they're as good as Seoul stars), or do they still suffer from the same problem? Particularly interested in what comes from Cutter, since that still seems to be the most obvious source for these LEDs. If I get more LEDs should I get them mounted on stars or put up with the extra trouble of using bare emitters for better heat transfer?