Yeah, 5600xt/5700 is pretty much dead for mining. I still prefer the 3080 for density, managing 2 x 3080 is better than 3 x 3060 ti, on performance per watt then 2 x 230 = 460 watts, 3 x 120 watts = 360 watts, yeah you save 100 watts with 3060 ti. I guess possibly the 3060 ti is a little bit ahead in the end.
For people like me who pays more on electricity, I'll prefer to save 100w in the end, Nvidia cards are pretty easy to deal, even 6 card or + rigs
AMDs ones are hard to keep running 24/7, but I always liked Nvidia ones to maintain, only set overclock and undervolt in MSI Afterburner and let mining for months without restart
Don't know the prices you guys have, but here in my country, 3070 are the same price as 3080 at the launch, and 3080 skyrocketed and costs 30% more
There's no card to buy right now with reasonable prices, only 5600 and 5700xt
I'll try to grab one 3060ti at launch here, I'm sure they will increase the price on second batch, and unfortunately here, they are using bots to buy