It all depends on the software you use the most.

High-end iMac or iMac Pro? Ever since the iMac Pro was released in 2017, that’s been a key question for pro-level Mac users who aren’t sure if taking the perilous leap from the summit of the iMac product line across to the $4,999 (and up) iMac Pro was worth the financial risk. With the 2019 updates to the iMac line, the gap between the two products has narrowed even more, making the question that much harder to answer.
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https://www.macworld.com/article/3386401/how-high-end-2019-imac-measures-up-imac-pro.html