RTX 4060 Ti 16GB adds 0 GB VRAM for the same price. The real question is whether your workflow needs models that RTX 4070 Ti SUPERcan't run.
$ recommend → If you own a RTX 4070 Ti SUPER: wait. Prices drop, refresh cycles continue. If buying new: get the RTX 4060 Ti 16GB IF your budget allows AND you need the extra headroom.