Hi David & Betty! I haven't been on the Voyager in a while so can't give an updated answer.
From reading other posts that are more recent, I think the answer is about the same as when we had the Horizon Suite on a panama canal cruise. I don't believe the ship has been drydocked to specifically address that issue in some time. If others know differently, please correct me.
The ship has a bit of a vibration that ranges from barely noticeable to somewhat noticeable. Does it matter? That answer seems to be all over the map, ranging from delight that they feel rocked to sleep to feelings of motion sickness or inability to get to sleep. The most common answer is "barely noticed it". It's a judgment call you ultimately have to make.
My favorite cabins are the "G" section mid-ship on deck six. Why? It's so very convenient to all the public areas on the ship and are quiet and so reasonably priced relative to other choices. My husband, on the other hand, would book a horizon suite again as he adored the bigger balcony.
The horizon suite was more prone to creaking when the seas were a little livelier than when we've been in the mid-ship G cabins. That bothered me more than the vibration. You get a double-sized balcony and, if you get 878 or 877, a larger balcony with a 270 degree view. The suites on Deck 10 get more noise and possible spillover when the outside La Verandah section is hosed down.
Hope that helps and wishing you a wonderful crossing. Cheers, Anne