What's the most profitable and efficient GPUs for crypto mining?

[Ade]

I have been into mining for a long time and I was using the RX 580 but it finally died after 3 years of mining 😅. So, I upgraded to a used RTX 3060 which I bought on eBay for $180. It  mines RVN decently. But one of my buddy's RTX 4070 does more because he earns almost double, if not more than I earn per day.  What's your go-to GPU?