A long time ago I was in Pittsburg PA. wandering around a mall where I found a hardware store. I picked up a mini Maglite torch powered by 2x AA cells as it was 1/3rd the price as in the UK. It worked fine but it did seem to get through batteries quickly and never worked too well with NiCds. So it just got put in a drawer and forgotten.
Nowadays there are a bazillion cheap LED torches that cost next to nothing and the batteries last for ever. It struck me that they must make LED Maglites now and maybe someone does a LED upgrade for an old incandescent unit. A search on eBay showed many and a few pounds later my 21 year old Maglite now sports a light so bright that if you put your hand in front you can almost feel the photons pushing back!
For £7 my NiteIze upgrade kit consists of a 30 Lumen LED, a new mount and reflector. It takes, oh maybe, 2mins to install and you can always go back to the Maglite bulb if you want. £7 buys a lot of cheap torch from China or you can have something nice that now works and is very usable. If you have a Maglite, then upgrading to a LED is well worth it IMHO.