I fly trex 600s, started on 450s but upgraded due to fact of visability out greater distances of 30 metres etc. I can fly inverted, loop etc. I used phoenix for a while and it did give me some help. However I purchased a 3d helicommand system for the 600 as it was quite expensive to replace the rotors (65+). I was able to set it up as in the robbe video.i.e. hands off the transmitter completely for as long as i like at hover. I would recommend this device very much it saved me endless expense which far outweighed the cost of the 300 it cost. Plus if you get into trouble just let go of the sticks and it will maintain a steady attitude....perfect.
good luck with the flying buddy!!!