My "collection" such that it is consists of an assortment of cheap(er)/lower output lights in various places. Rarely is illumination over large area/distance needed around the house. Need is lessened by lots of fixed nightlights, ac and battery, scattered around, plus solar garden lighting outside and some inside on window sills.
As with others I sometimes avoid turning on ac lights at night when moving around, checking things etc. Basement has motion-detector lights but need a flashlight initially to get down there.
My electronic water meter has a small solar panel to activate display, when I read it monthly. Bright flashlight does the trick.
In addition, small local adjustable flashlight source is good for working on equipment, especially reading component part numbers which usually also need some magnification. Some product labels are small and difficult to read but usually OK with additional light.
One case where a high power flashlight was useful: power-line fuse blew at 2am. I used it to check pole transformer in neighbour's back yard before calling the utility; fortunately no sign it was the problem (smoke, sparks, burn marks etc.), no need to call fire dept.
Dave