I'm on a Pixel 8 Pro and I am sticking with that for now. I don't think the iterative upgrades the 9 series offers justifies the price. And naturally, a lot of places are putting the 8 series on sale, so it's an even better deal if you can find one. The 9 series internals are barely upgraded over the 8 series. And in typical Google fashion (if you end up sticking with the stock OS) many of the exclusive 9 series features will come to the 8 series eventually. The only real reason to get a 9 series phone is if you really like the hardware design. The increased ram on the 9 is mostly for the Gemini stuff they are pushing, and the rest of the general specs are almost the same as the 8. Yes of course it's a new generation so the processor is "better" and whatnot, but not to a degree where in real world use, would you notice the difference between the 8 and the 9. Again, most of the internal improvements are targeting the AI stuff that all companies are pushing for.
TLDR: Save your money and get an 8. It's mostly the same.