I've bottled it - read few bits online that made me think again about the Tarot - apparently the RC Timer clone is better and less prone to break the arms. Also - as i'm wanting something specifically for video - i've ordered a 550 instead!
With the 550 - I know the 6 x Sunnysky 980KV motors I have will work nicely, also, the arms will be interchangeable with my 450, and lastly, i've read that the Hex config is generally more stable for video, so that sold it to me