lol there's no luck in having multiple everything.
I also have 3 full sets of suspension setups and 6 full sets of springs for the car.
Fortunately after trying for 2 years I just sold one set of wheels; now it's time to get this rollbar out of the basement.
With that latest list... Kosei by far. They should be plenty strong as long as you aren't driving through a battlefield of potholes. Mainly because of price, and IMO better appearance. OZ and Konig alike have a lot of nice wheels, but so many of them are so... so hideous.
CE28s aren't nearly as old on the market as the RPF1 mk2s are.
What we also don't see anymore are the multipiece RPF1s, gorgeous looking wheels.
One thing worth considering
even though you may not want 18s; the cost of wheels and cost of tires for 18s have dropped an insane amount over the past couple of years. And in some cases, owning 18s is actually less than 17s. (Not to mention they look better on gen3s with those massive fenderwells)
Just doing some short hunting around.
I ... think I just fell in love with TSW's new Bathurst model LOL!
Anyways, this is what I want you to really see and consider (while I was hunting around looking at wheels and thought of TSW, which is a higher quality [appearance] wise vs Konig).
Similar style wheels, but look at how cheap appearing the Konig looks. Although Konig is a good brand that has been around for some time, they're quality appearance wise.... has never been anywhere near "average". Even Drag wheels look better than Konigs.
Always always always look up real world images of wheels. Those renderings or studio pictures 9/10 make the wheel you want look far better than it does.
That TSW? Now in extreme width and low offset..... insanely gorgeous.
But use the image above for reference as to not be fooled by how something looks under best conditions.
Continue to take your time, and IMO seriously, look at tire prices for 18s, you may not be as afraid as you think you are.
I only have owned one set of 18s, my winter wheels; and they have the cheapest tires out of everything. $428 for Kumho ASXs