The 4070ti 16gb would be better as it has a 256bit bus compared to the 4060ti 16gb which, as has been mentioned, only has a 128bit bus. The 4070ti also has more Tensor cores than the 4060ti.

Get as much VRAM as you can afford.

nVIDIA is also releasing new cards starting in late January 2025. The RTX 50 series.