I'm late on this post but I've singled and doubled with Ava and MVC . I've seen Ava 15-20 times and Mvc in a double and single. MVC is still working out of Philly and very good choice. Ava as I know moved and might be retired. Mistress Tissa is my #1 pick for humiliation and just about any area of b/d you want to get involved in. MsT has an excellent,well equipped playspace she calls her Temenos. I've been seeing Tissa for 7 years on a regular basis and she is a wonderful person and a great Dom. We all have our favorites and Ms Tissa is in my head so often I should start charging rent.