I have been a long time McIntosh user. I have had the Cary sli 80 F1, and loved it. Also easy to bias. I purchased a Primaluna Prologue One to see what the hype was about. I was shocked to say the least, I rolled tubes and the sound always changed and improved. That little amp is capable of so much. I recently purchased the Dialogue HP amp and all I can say is wow! It gives my Mac MC 352 a run for the money! I have it currently paired with a Manley Shrimp pre amp and the soundstage is incredible. I listen to primarily vinyl with a Manley Chinook phono stage and am quite satisfied. I’ve used EL 34, KT 88, and KT 120 with great sounds in their respective ways. As far as tube gear goes it has to be the easiest to own, with outstanding results. I still have the Prologue One in a small system and can’t let it go. For price point, and ease of use the Primaluna gear is well worth it.