Its some investment($350+) that i would like ask to the community.
i have seen that they have some problem and all other stuff. but i don't know certainly.
so, what do you think about this guys?
I'm in the same boat as most I suspect.
Started with the 5... moved up to the 6. I quickly outgrew that within a few months and moved into the 8. LOVE the 8.
I the 18 wasn't so damn expensive I'd probably move into that too ;-)
With the exception of my A320 model which needed a reversing cable for the nose wheel, I've never come across a model I couldn't mix right with this radio.
In fact the quad and hex (DJI Innovations) actually needed the AR8000 rx to work right so it's a no brainer for me. And with the number of models in a constant state of flex (unfortunately not always going up haha), the model memory has been irreplaceable.
Post sales is good. I had an issue with my 6 last year (before I upgraded to the 8)... I sent them mine they fixed it and sent it back in a reasonable amount of time.
I dropped my 8 and the left stick got buggered up. I was able to open the radio up, figure out the guts and make it right again.
I also use telemetry on a few models - I'm pretty sure the 6 doesn't have that capability at all.