4060Ti w/ 16GB VRAM or 3090 w/ 24 GB VRAM

Of course with those you'll also have to spend some money on motherboard, ram, SSD, PSU, CPU, ect.

I think the best bang for the buck is probably a Mac studio with as much ram as you can afford.

I bought an RTX A2000 (12GB VRAM), and it's fine for 7B models and some 13B models with 4 bit quantization, but I kind of regret not getting something with more VRAM.