Trying to revive a 3 year old thread?
The newest will always be the best ever, but my opinion is Maxwell was the best partly because it coincided with the
the explosion of altcoins and supposedly ASIC resistant algorithms. Ampere will always have the stain of LHR.
I know that many miners are now running the 3000 series, because it is cheap and in many algorithms it is no worse than the new expensive 4000 series video cards.
With the end of Ethereum mining, mining of other coins has not died, and the legendary 3060 and 3070 will remain at the top of budget mining for a long time.