Semarchy offers very good ease of use. The ease of installation and maintenance are also great.

I love their interface. I love the fact that all their features can be implemented out of one client interface. That is wonderful, as one of the things about Informatica is that you've got to go to the administrator tool to do all the backend stuff. That's fine, however, then you've got to do all your data quality stuff through your analyst tool. That's a lot of bouncing around. I love the fact that in Semarchy, you can install it very quickly. You can get it up and running, and you can do a quick proof of concept really fast. 

They're the cheapest of all three of the products that I helped the client evaluate. You get a big bang for the buck with Semarchy.

I love the fact that their APIs were really easy to build straight from that single interface. I love that. 

Their training, their online training is fantastic.

Their tech support is the best out of all three of the solutions I've looked at - including Informatica and Profisee.

Their documentation is excellent.