It is not just one thing for me... it is a culmination of all of them, because if the broker was specialized in only one aspect, it would not be enough. So everything from the trading conditions, to the trading platforms and the branding, for me, activtrades does it right.

Hm, I guess their reputation in the community and balanced trading conditions are exactly those things which influenced my decision to join them.
They have been in the business for a long time, they have tons of reviews, awards and strong recognition in the community, so questions about funds & data safety aren't on the agenda whatsoever.
Plus, they have extensive range of markets, narrow spreads, fast execution and several options of accounts, i.e. Demo, individual and professional one.
Smth like this...