2x3080ti or 3090?


I have 2x3080ti and a 3090. Both 3080ti’s are connected to the motherboard through a riser.

My question is, should i get another 3090 and use 2x3090? The advantages that i can think of are 1) less power use 2) x8/x8 connection with the motherboard and 3) they both would fit inside the cabinet

But if for some reason you think 2x3080ti are better please let me know