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Failure rates for sdd are better than hdd but generally not by a lot. I've read that hdds can have a higher "crib death" where new drives have a higher failure rate, but after like a year they are solid. Unless you're buying thousands of drives you're unlikely to notice though.
I've never heard of "noise" being an issue for an hdd - especially if you have it in any sort of enclosure. If you're not sitting right next to it you shouldn't notice.
The biggest differences are performance and cost. If you want speed go ssd. If you want cheap go hdd.
My desktop systems run ssd where performance really matters to me. I get hdds for my file server where I want bulk storage.
The noise is only an issue because of how small my appartment is. I can't really isolate noise in here. I would think it also depends on which drives I get. I read that some are louder than others.
I have a bunch of WD HDDs (9) in my Fractal Design Define R7 case sitting on top of my desk, about 2ft away at ear level, and can barely hear them. If anything the hum of the fans is what I can hear most (though still quiet). I have a security camera NVR with a little 40mm fan 12ft away on top of a high shelf in my office and I can hear it over my server by quite a large margin.
Even if rebuilding it today, I'd go for HDDs as you can't buy 12, 14, 18TB, etc SSDs for a couple hundred bucks and you won't really gain any benefit using SSD over HDD as reading large movie files from a disk isn't going to saturate the drive cache and you won't be dealing with random seeking.
You said you might upgrade all the drives in the future but how (2nd NAS?) and what will you do with the old ones? 4x4TB is going to fill up pretty fast especially when you're first starting out and eager to add new titles.