I’ve had in the pass some hacking on my different websites, since I added Shield protection, it works like a charm, all is peaceful. Beside that, you can parameters many many things in order to adjust to your needs.
And more, once I’ve had a trouble with Shield, the support was very responsive and attentive. Finally, the problem was not with Shield but with my browser. They asked me what to do, and everything came back to normal.
So I definitely advice Shield !