My train of thought is similar to yours. I don't think Superia 100 exists anymore, I think it's been replaced with the budget Fujicolor 100. I thought I might try Superia 200 but it'll be grainier. Maybe 160VC and play with the rating?
Yes, Fujicolor 100 is what it's called now, it's the same stuff, it could be worth a go, it's cheap enough to. Superia 200 is a great film, not that grainy or that much grainier than Reala, if at all in fact, but it is definitely contrastier in my experience. No bad thing, maybe a little overexposure may control that. Worth trying but I have a hunch you'll get on better with 160VC, may also be worth trying Gold 200 which I quite like.
I've been doing a lot of RA4 printing of Reala and it's wonderful stuff, punchy in the sun but still quite 'natural' to my eye. There's no grain at all on my 8x10 prints. I've ordered 20 rolls. I thought about ordering more but this stockpiling is killing my budget - Endura paper and 800Z are also on their way out. I think Ektar must have killed Reala sales as I always thought this was a big seller for Fuji. It's the most popular film at the Fuji pro shop.
My entire colour film / paper choice has been discontinued in a matter of months...
It does strike me odd that Ektar canibalised Reala sales as to me they are very different films. But it seems that may be the cause. I have a good stock here and will continue to shoot 120 Reala but I know what you mean about the stockpiling, it's killing my bank balance too. I am trying to buy as much Supra Endura as I can afford, not nearly as much as I'd like to but bills have to be paid I guess!
Like you, 800Z and Reala were staples for me, as was 160S...
If we don't see 160NS or whatever they're gonna call it on these shores, it's pretty much just Reala and 400H for my colour negative needs from Fuji. I'll still use their E6 material mind.
I just hope Supra Endura doesn't kick the bucket in sheet form too soon, optical RA4 prints are just gorgeous and so cost effective compared to digital + printers + inks....
Vicky