Fenix L1P,

This rides in my pocket every day. It is bright and reliable, and small enough to ride in my front pocket beside my wallet.

Mag Solitaire, with an Arcmania LED dropin from Lighthound. Don't get the old Tektite LT-3 dropin: it costs twice as much and is half as satisfactory. With the Everready Lithium AAA, the Arcmania dropin is bright enough to be worthwhile. The Tektite one specifically says not to use the 1.7V lithiums. This rides in my other front pocket, with a Micra and a whistle.

Maglight 2C, with three of the little CR123 batteries and a 5-cell bulb. This makes a really white, bright light with great throw. It rides in the glove box of the car, and it will let me light up the house numbers on that house waaaay over there. It's great for finding an address in the dark, and the lithium batteries mean that it will still be working when I need it next year.

Nuwai TM-301X-3, the 2 cell version of the Q3. It uses two of the CR123 cells, and it has a 3W Luxeon LED. It's not bad, but I probably won't buy another. My wife has appropriated this one to ride in her purse.

Mag 4D, with Magled dropin.

This light is at least 20 years old, and the LED dropin from Mag has made it usable again. It's brighter than the original bulb, and the batteries last longer.

Mag 4D, with Surefire P61 bulb

This light has a Surefire P61 in place of the stock bulb and reflector. It has less throw, but puts out way more light than the Magled bulb. The 4D cells seem to be able to drive the surefire bulb fairly well. I suspect that I'll be able to swap the cells into the light with the LED bulb when they can no longer drive the Surefire bulb.

Cheap lantern, which takes a 6V battery.

I've put one of the 4-cell Magled dropins into it, and it is my power outage light. Because it is so square and short, it stands on end beautifully, and lights up the room. Because the terribly expensive 6V lantern battery has so much capacity, and because the Magled bulb draws so little current, it has run for hours so far this fall, and no sign of fade.

Petzle Zipka.

The size is great. That's about all I like about it. The brightness is about right for reading in bed, but that's about all it's good for. Unfortunately, the switch is flaky, and the light begins to flicker as soon as the batteries have an hour or two on them. Fiddling with the switch will get it to work for a little, then some more flickering and fiddling. I won't buy another.

Petzle Micro.

This has a Tektite LS233 LED dropin. The Tektite bulb is ok. It isn't very bright for a 1W Luxeon, but it works. The Micro that I put it in isn't so good. The bulb holder is a cylinder of plastic, smooth on the inside, with a ridged bit of brass running up one side to hold the screw-base bulb. It works even worse than it sounds. The head is difficult to screw off, but isn't watertight. The LED bulb makes it usable, but I would never buy another Petzle.

Streamlight Stylus.

This is a surprisingly useful little light. I keep this one in my electronics tool kit. It came with a black plastic nose cover (it's the Radio Shack version) which insulates the last two inches, and protects the LED from scratching. The switch is a twisty endcap, with a push-for-momentary button. My only complaint is that the 3 cell version is a bit too long for a chirt pocket. The AAAA cells are hard to find, too.