Let me share a bit of something. Coming from the stand point of two systems with more than I could have ever wanted to coming down to one simple question................what do you want?
Little things mean more than we think. When I started looking at what I had, and realistically looking at what I wanted, not only now, but how I wanted to treat this in the long-run, it became a very different journey. I don't think lateral moves are always a bad thing and you can't always equate the move to the price either, especially now a days.
Just bring a little common sense to the decision, you're not talking about going from a SD to an Orbit, you're looking at a very viable alternate to the SD with no blaring down side. Like
@HiFi Guy mentioned and what I'm starting to see/hear, these "differences" on paper and backed by numbers aren't always what they're cracked up to be.
Go with your gut and a little insight from the "audiophile" nerds around here and you'll be happy with where you land.