I was using their service first for a week and then a month. And this month I have renewed my monthly plan.
The price of the service seems the most appropriate with respect to other competitors of this quality.
In this short time I can say:
It is very easy to use, simply download the shortcut and connect.
I've been primarily using the data center located in NY and latency with my Broker is always less than 1.70 ms.
The best thing is customer service, they will answer in minutes. In my case it has been to transfer the VPS from NY to London or vice versa and has always been very fast.
I have done this three times at least and Arturo F. has always been very attentive and friendly.