RE: who bought all the berg rx's
Berg was sold to Castle Creations. They are developing new 4, 7 and 9 channel receivers. The 4 is suppose to be out in a few weeks, the 7 longer and the 9 probably later in the year as it is a fully synthezied model. Since Berg sold the business quite a while back, no more product of the current Berg receivers has been produced and what was in the pipeline has for the most part been purchased already. I'm sure there are pockets of places that have a few here and there. Aircraft World seemed to have a supply of them but you would have to check with them. Other than that you'll just have to wait like the rest of us for the new stuff to be released.