I was sufficiently impressed enough to order a MK2R+ to run both radios in the shack.one of the best decisions I have ever made. My first venture into mH was the USB III and the microkeyer II. I noticed a lot of serious contesters, and DXers for that matter, were using mH gear. I ended up migrating to microHam some years ago after having constant issues with a domestic manufacturer of similar equipment. Can't begin to describe how well designed and superbly performing this little monster is.