I've had Morrows MA4 and PH6 for a few years and just ordered MA6s If I love them I will keep if not I will do what I did with their power cord which was very good maybe even better than what I have but not worth the added expence for me. Two of my friends are running the MA5 well one is the other has them on order. I was not there when the tried a shootout between the PH 6/5/4 and the MA4 and 5s but they both thoght the 5s were the sweetspot between budget and performance.One of them have a lower level SP and while not the last word for him he has them on a secondary set up and his very satisfied in that application.
