U2Fast,

The Gyro most used at the world Jet Master is the ACT Fuzzy Gyro. They are made in Germany. While I'm sure the JR Gyros work great, these gyros use an external SMM sensor that is not prone to some external factors such as heat drift. They are expensive, but for now at least, they appear to be the best at what they do. They are a single axis / dual servo gyro.

We sell them on my website.

Chad