I'm a big fan of Maglite, been using them for years in work and naturally also have one at home
It's about 15 years old and is perfect for all those unlit areas around the house should I need to go there
On the bikes I have a couple of Garmin bike lights that also could double up as flashlights should the need arise
I really like these lights because there well made solid lights with 800 lumens and connected features and are used every time I'm on the bike
They are quite expensive but if you're prepared to wait and shop around you will see them heavily discounted by as much as 50%
But my favourite light (can't believe I have a favourite light

) is a little Energiser light that I found in Leroy Merlin ( A Spanish Woodies)
It's a tiny powerful Led light not much bigger than a AA battery with the light part been at 90° to the body and has a little magnetised belt clip
I have it mainly in my car in case I need for changing a tyre or some other road side emergency when there isn't enough street lighting
And of course failing all that there is also the flashlight that every phone comes with these days!!