I used MySignature before getting this lifetime deal. The reason was that I looked for a program where I could easily create nice signatures.

Tried HubSpot and different ones, but MySignature had the best layouts. Maybe there are some faults here and there.
However, I run a company with 8 people and we use signatures only for our customer success team. As long as you have less than 20 people you take care of it, it is easy to scale.

Would buy it again.