Hi Jimmy.
Not sure what you mean re the going smaller stuff Jimbob ?
I've got my 550 up and flying - going to put the Zenmuse on that when I get time.
I'm going to build the Tarot 650 Quad up with the Naza Lite and try the Tarot Gimbal on it.
When I tried the Tarot Gimbal on my 450 Quad with a KK2 controller, the video quality was very good and stable (tarot not perfect but close) so i'm hoping the 550 will be better still with the extra stability and the Naza V2.
The Tarot 650 - is just a bit of fun, I liked the look of it and i'm considering some pancake motors and bigger props if the Sunnysky Stuff I have already is not ideal.
I'm not ever looking to get a BIG camera up in the air - the GoPro is more than enough for what i want