Do not buy any old ones.


buy amd

5500 8gb

5600 6gb. weakest choice due to 6gb but if you get it cheap buy it.

5700 8gb

6800 xt 16gb

6900 xt 16gb overkill


with or with out the xt


buy

nvidia
3060ti 8gb
3070.  8gb
3080.  10gb

3090.  24gb over kill

I would buy any of the above if I can get them cheaply


these are my least favorite to buy.
the amd 6900 xt
the nvidia 3090

but If I can get any of the above at proper pricing I would buy 2-3k worth