Yep, the bulbs are spendy, but they really do upgrade a Maglite. A 3xD cell light with a regulated LED is a pretty good light.
The
3 Watt TerraLux TLE-6EXB has a lot of throw when you tighten up the beam. Without these I'd have put my Maglites into deep storage; instead they fill a role that a 2xAA light cannot.
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Better is the Enemy of Good Enough.
Okay, what’s your point??