We actually evaluated a couple of service virtualization options: CA LISA and IBM RTVS.

We did try RTVS as the organization had a tie-up with IBM, and other software too, hence commercially, it was benefits for us. Also, RTVS has a free one month trial, so we could experience the tool before we actually purchased the license. Also, IBM RTVS is far cheaper than CA LISA, which provides a similar SV solution.

We evaluated other solutions, but there is separate body for tools and licensing who makes the final decisions.