Honestly very impressed. Expected we would not be interesting enough and interaction would be cold and unemotional, however I was made to feel a valuable client, and real attention was paid to what mattered to me, and the business. I felt understood, and the evidence from the process is that I was. As the scope and implementation was refined I interacted with a number of technical people, who had a solid briefing before I discussed anything, so I did not need to go over it all again and again.
Overall, I cannot fault the experience.