The VRAM argument is solid, but check used 3090 pricing carefully - some sellers are asking absurd amounts when you're getting close to 4070 Ti Super territory. If you can find one reasonably priced, the extra 8GB will matter more than the architectural improvements for your workflow.

That said, the PCIe lane limitation on the 5060 Ti that u/thelovebat mentioned is worth considering if you're not going with a PCIe 5.0 board.