Question Is it worth it? need advice if I should upgrade or should I wait? SLI 1080ti vs 2080ti

[Derangerous]

Hello! So I have two SLI 1080ti's and I was wondering if its a trade off if I upgrade to a 2080ti? or SLI of those? Just kinda feeling out the prices and would it make sense for performance wise?
I am already upgrading my mother board, ram, and cpu over to snag a Ryzen 9 3900x with a x570 motherboard and some OC Ram probs 32gigs or something of such.
But is it worth upgrading my gpus currently?

 

[Derangerous]

Wow no one?