My first time hearing a tube amp was an all McIntosh system. MC275 and tube preamp. My jaw hit the floor. I couldn’t afford that system but I did get a used Primaluna Dialogue One and I loved it. I wound up upgrading tubes and fuse and I went back to listen to the MC275 again a year or so later and I thought my system sounded just as good. After a couple years the upgrade bug hit me and I decided to get a Line Magnetic LM508. It did beat out the Dialogue One in sound quality but it also retailed for more than twice the price. However it also had a hum and buzz that I couldn’t get rid of. Then it had a problem and I had to send it for service and it was gone almost 6 months. The PL was dead quiet, never had an issue, didn’t run as hot and sounded great. I used the PL while the LM was in service and almost decided to keep it. However I sold it when the LM came back. Eventually I decided to sell the LM too as I just wasn’t super confident that it wouldn’t have an issue again. Both sounded great to me. I could easily live with the PL forever and if the LM was quiet Id feel the same too. I used them with anything from Salk Song3’s, Totem Hawks, Boenicke W5’s, Omegas, Clearwave Duet6’s, and some others. Not all of these speakers are ideal for tube amps but neither amp had issues driving them. Now I’m using a Canary M90 but I could easily go back to a PL amp one day.