Exactly because of this reason, you should use us. We have built a low-latency HA platform. And it's our core business. This means that we will do it the best way possible.
I can understand your concerns, but you could try us out on a smaller project to begin with. Or wait until we launch our licensed version which will allow you to install the system in your own environment. I.e. keeping the data safe with you and under your control :)
But it might cost a little bit more than $9 :)