Pre-padded Carpet vs. Individula Padding

Is there any preference or recommendations of using the 1/4" pre-backed carpet compared to the individual pad and carpet? It looks like the individual pad has a thickness of 3/8", so I'd assume it would provide some more cushion and I'm sure the install cost will be slightly higher to install the pad first.



Anyone one has a strong preference either way?



Thanks

Pre-padded Carpet vs. Individula Padding