I can't speak about the other radios because I have never used them. I use the DX3R and its a very good radio. I have not heard or experienced the failsafe issue you spoke of with regards of its proximity to the Faast system. Also, your listed weight for the radio is way off. I just weighed my DX3R WITH 4 duracel alkaline batteries installed in it and it weighs 485 grams. Without the batteries the radio weighed 387 grams. This radio is super light, which is why people always say it "feels" cheap.