I've been going back and forth between this and the 5610U for a while now (since the strap broke on my F 84-W), mainly for a watch to wear in bed so I can check the time in the early hours of the morning without waking my wife and two dogs. As the 5610U contains the same module, seems very legible and easy to read at night, and is quite a bit lighter than the 5000U so maybe easier to sleep with, I just went with that.
I guess the fact that it's less than half the price also played a part and I have a couple of JDM Seiko watches anyway. I also enjoyed your review of the 5610U and will be looking at your 3495 module guide when my 5610U arrives from Osaka in a few days.
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