Probably ASA.
Because I used 125.
Discussion
yes you should have used 400, it's more sensitive
It is interesting to see how film photography changes with ASA.
yeah, exposure/aperture and dynamic range and grain all have their place in a great photo, it takes a lot of practice to get good photos consistently
you can do a lot of the same thing with digital too but it's not quite got the same "warmth" as the analog tech - sample aliasing in digital signal capture is hard to remove without absurd resolution, nyquist said 2x but honestly i think 8x to get a clean image/sound
I'll get some experience.