I bet the Aria is a nice little integrated. I do see a number of them for sale, sometimes after short ownership. Not sure why. In any event, wonder if this will be a move up from your Marantz or more of a lateral move. (They may be voiced in a similar direction) If you had the money, I would think a Raven integrated might make for a startling contrast to your Marantz. They have an in home trial period so it would be hard to go wrong on this one. If you did go this way, would love to hear your thoughts.