We also evaluated ORBIS, Signavio, GB Tech, ARIS.

We chose iServer partly because of the suitability of the product. ORBIS, for example, doesn't do hierarchical structures and also doesn't cater for policy integration into the solution. Some of the other ones were because of price and complexity. ARIS was just way over the top for the use case that we had. GB Tech and Signavio were very close, but I just felt that iServer was better this time.

No, I did not.

We did not evaluate other options.

There are other solutions out there that have a better user interface.

Yes, we evaluated AG software, some online process definition tools, and several document management solutions.