Now the dark season has started in N-Europe. My bigger bikes have a decent light, but not my two 50cc scoots (Peugeot Kisbee).
I am getting old and my eyes are not that of an owl.
The standard lamp is a 35W Bilux Ba20d, in the pic on top (I don't know why the standard box is so big). I bought a stronger 45/40W Bilux (middle) and a 35/35W Halogen (below).

These pics below are headlight with Bilux (left) /Halogen (right)

These high beam with Bilux (left) /Halogen (right)

What a difference, I am really surprised! (I'll try the 45/40W Bilux later.)