I use flashlights a lot here in a rural area and having outdoor dogs. I'll guess I have several hours of on time and a couple of hundred uses of the switch, on the factory standard batteries.
Up until recently the light worked flawlessly and well, especially for the decent price. The slimness is a little easier to grab for small hands, but can slip out of working men's hands. The slickness is good on pants, except for the tail end which has dulled, sharp edges.
I've had my first minor failure with slight, occasional flickering. I think it is the switch. I really don't like such issues, but at this point would still recommend the product. In the past I've called Ray-O-Vac on their yellow pocket industrial flashlights which they replaced twice over many years. I'd still use it but the Krypton lamps are much less efficient on energy use (run time) than these new LED lamps. Also, the push button switches are easier to operate than the slide switches, and don't get moved into the ON position as easy in a pant pocket. The side position of the switch is an advantage in pulling out of a pocket and turning on swiftly with one hand.
The weight is not too bad, though the plastic is favorable. The aluminum has an electrical contact advantage for operation since the case is conductive, but would be a disadvantage if environmental electrocution was a possibility.