I run my quad with 2.0.49 and Mission Planner 1.0.89 with no major drawbacks. I played with Loiter, Alt-hold, RTL with success (even though sometimes RTL tends to come back at a low (too low) altitude),.... and plan to start playing with planned missions/auto-mode (as soon as I buy a 12V/220V AC converter to power my Laptop from my car 12V connector....)
I have seen that 2.0.50 is supposed to be 'the best one', but, by reading through the posts talking about it (http://diydrones.com/forum/topics/arducopter-2-0-50), it is difficult to decide whether I should update or not (I have read people having alt hold issue, ppm chip issues, and other weird issues...), what do you think ?
For info, I am not planning to use CH7. All my modes will be controlled through channel 5 (I am using a Spektrum DX7 with AR7000 receiver configured with the '6 modes hack' ). I am not planning to record WP, and I have no telemetry.
Thanks in advance !