I am really liking the AR7200bx. It is the beastx with the reciever built in and lots of channels. It only needs one satelite rather than the 2 required with the 3gx and doesn't doesn't use that 3GX software ( a major bonus for any flybarless system! - no 3GX software that is - they really have to improve that and add some useful explainations to thier overly long list of adjustable parameters
) I have 2 3GX helis, a 600 and 500 and niether are flying really well yet. The folks at the field enjoy watching them doing strange things so at least I am a source of entertainment. The 600 has a head nod and elevator gain issues (flipped inverted once!) and the 500 pitches up suddenly in hard pull ups (no fun!) - has happened several times. I have been working on programming adjustments for both. The 7200 just works.