I would have gone the opposite direction.
If your system power consumption is only 100W, with a case using optimal airflow, you might be able to get away with using a PSU with a fan as the only fan in the entire system. Depends on the CPU of course, and video card, whether transcoding video and TDP of those parts.
$230 PSU for a 100W load system seems like gross overkill, though you did not mention the value of parts or specifics of what parts you're hoping to protect by paying 5X what you probably need to.
I don't understand the "versatility if I want to use it in another system like a gaming rig", statement. You are building a media PC and at some point are just going to abandon it and then reuse the PSU for something else?
To me it seems more rational to just buy the PSU it needs, bank the savings to apply to the PSU you need for a gaming rig if/when the day comes that you need another PSU.
You mentioned efficiency but what does it really matter for a 100W system? Ripple suppression is an automatic inherited feature if you are using any pedestrian grade PSU rated for 5X your system load.
I am not suggesting to buy *junk*, just that there is a wide gulf between a reliable PSU capable of good life at 100W load, and a $230 PSU that, unless you abandon your media rig, will stay in it for the life of the system.
I just don't understand. You haven't described any use where I couldn't throw together retired parts that I upgraded out of use, that are old and *free* and expect a long life out of them, just with a newer and/or re-capacitorized PSU than a 2009 model, especially one that was fanless.
Fans are a good thing! Modern quality PSU, turn off fans or run them at very low/inaudible speeds until the load/temp increases to need more airflow and as I initially mentioned, in some media PC setups, it could be the only fan you need in the entire system, depending on the specifics. If you have a boatload of HDDs in it, then no, I'd want a pusher fan to blow through the HDD rack too.
Ultimately I wonder if there is some relevant detail that you aren't mentioning. I don't mean to steer you away from spending a boatload of money, just don't see any reason to. Replace something that is past it's lifespan with only what you need for the system you're building. Let tomorrow take care of itself with the money you saved for that rainy day.