I picked up a few on the new Estes Rockets this past wekend. I got the Lucky 7, the Gauchito, and the Rubicon. I put the Lucky 7 together in about 10 minutes, I'm not sure I will fly this one. Its 100% plastic and I don't think the fins will survive a landing. I'm in the process of building the Gauchito, it seems to be of better quality. The Rubicon looks the best so far as in quality.