Thanks for the replies. I was looking for comparable speakers.
Since this post I have warmed to my amps ' sound characteristics . I have a large room and my 4 speakers lack the size and air to fill the room. Plus my amp is reaching its max in the attempt. The Modwright Integrated with Watkins 4, Kef Ref 3, Ryan 601, and Kef LS50.
I am continuing to search for more efficient speakers buy also contemplating two subs. However the more I listen the more I appreciate the amp.