Hi Dave,
I didn't come to forum for a long time. I got your question about why have to switch from Trios? To tell the trust, Trios is a good speaker (and expenssive, too), but to me their HF is not strong enough, and more than that the HF and MF sound seem like got some taste of rasin or tree sap. I feel they're not transparent enough. After that, I changed to a JBL S8R, and then a Hartsfiled, and many more. And the Hartsfield is the last one I still keep, even Tannoy Westminter HE and Kingdom have gone. But most the time I listen to my custom-system: 2 pair of TAD 4001 and the REL, drived by 1 MC 275 and 1 Audio Note Kansai, and Luxman CL35 MKII. I wish I can find a pair of MC 3500 "The king of tube" for my Hartsfields, but maybe really long later.
The Trios and RELs come together will make really good sound. I think not much system can reach to that sound. The last thing: The Trios are beautiful.
Bach