I agree that you're getting a lot for your money in the AQ4100-65W.
Focusing first on aesthetics, some people hate the dial because they think it looks too splotchy and random. Personally I think it's cool and unique. If you haven't already done it I'd try to see the thing in person before you buy - and if that's impossible then try looking at a lot of real photos online (versus renders).
One thing that doesn't sit quite right with me is the styling of the date window frame. The styling of it comes off as slightly too heavy to me. At least when looking at pictures online.
Turning to the movement, it's a great "smart quartz" (computer with motors and hands). I don't have a The Citizen, but I do have a couple Longines Conquest VHP watches, which are also smart quartz, and there are some nice benefits that come from that arrangement. Perpetual calendar, hand position detection/correction, power saving mode where you can put the hands to sleep and wake the watch up later, etc.
But I would stop well short of saying it puts the Grand Seiko 9F movement to shame. The two movements are nothing alike other than that they both have quartz oscillators in them. The 9F isn't a computer with motors and hands. It's closer to a mechanical watch than to what the VHP and The Citizen are. Perpetual calendar on a 9F is just as difficult as it would be on a 100% mechanical watch. The watch doesn't really ever know what the time and date actually is. It knows approximately when the hour hand has lapped the dial twice and the date needs to be advanced, and that's about it.
I love the grab and go convenience of the VHP. I love that the only time I have to mess with it is the day have Daylight Time starts or ends. That said, I consider Spring Drive to be the purest manifestation of the natural delivery of time in a wristwatch. And I would say that other than going with a digital LCD watch the VHP is about as far as one can get from that ideal form. Everything about the delivery of time is unnatural. The minutes and seconds aren't even geared to each other - with the minute hand moving forward a small leap only once every 10 seconds. Thankfully it seems like The Citizen does not share that trait.
If one values accuracy above all else, then Citizen's offerings are really hard to beat in terms of freestanding time keepers. But if one truly values accuracy above all else then a radio sync or GPS sync watch is really the best answer because even the best of the best freestanding timekeepers are eventually going to need to have the time corrected. Conversely a radio sync watch is probably never going to be wrong by more than about a third of a second.
As soon as one allows that there is something particularly special about the fact that Citizen can make a watch that is +/- 1 second in a whole year, then you've opened the door to something being more important than accuracy and the debate begins about where the line for "pride from doing things the hard way" should be drawn.
To be clear, I like all kinds of watches. High high beat, low beat, traditional quartz, smart quartz, Spring Drive, and even LCD watches. Each with their own unique set of pros and cons.
I could see myself owning a Chronomaster someday - if they'd just fix that date window frame.