Some people have more lights than others but even those with many lights still probably have just a few favorites. List a few of yous here. It might be interesting for others to read and get ideas for their next purchase and maybe even serve as a place to find someone who has something you're thinking about buying and who can answer questions for you.
My favorite lights are the ITP A3 extended, Zebralight H51f, Ultrafire BJ08a, and the Photon Proton Pro. I also have a well built single AAA Ultrafire single mode twisty.
I have a few more and have had a few more than that in the past including throwers, P60's and various headlamps but those listed above are my favorites.
Actually it is a Ultrafire p60 host, the other version of 504B (the sleeker design one), selfmade dropin XM-L T6 CW, L-M-H 2,8A KD driver, coated lens and SMO reflector. With a XTAR 2400 or 2600 which is used with 60+ min of runtime on high.
Similar but with heavy orange peel reflector for my night cycling tours.
Those are the msot used.
Pocket carry XTAR WK25. Lovelly little AA one with almost neutral color temperature.
I have some pretty decent lights such as a Fenix TK35 and Trustfire 3T6, but I have to say my favorite right now is my new Solarforce L2P with the Manafont XML T6 3 mode drop in. Small, well made, and extremely bright!
Of all my lights, the two that stand out to me are the X9 and L2i w/warm white XML. It’s hard to draw a line because so many lights have attributes that I really like. Honorable mentions, UF-H2 and EDI-T P4.
Like Greg said, there are so many with great attributes.
My overall favorite is my custom Mini-Maglite converted to single AA w/XM-L 5-mode @ 3A. It is insanely bright and extremely unique. Add in that it's my first truly, highly customized torch and sentimental value takes it to the top. I love this tiny light!
The rest are based on battery size as they each have a purpose. I really like most of my lights and like kids, it's hard to choose a favorite. In no particular order:
Balls-out photon cannon: Trustfire TR-3T6
18650: Trustfire F15 XM-L
Flooder/AA: Ultrafire UF-H2b
14500: Yezl A1 XP-G R5 (Horrible light with AA but wonderful with 14500)
In no particular order except for the Maglite and it's top because i've had it the longest and it's still the daddy!
Maglite 6D (with fusion showerhead drop-in) - bedside light for hunting things that go bump in the night
Ultrafire C3 SS - EDC and occasional bike light (modded with HML driver)
Nitecore D11v2 - EDC and camping lantern (with Solarforce lantern head)
Maratac AAA SS - keychain light
Solarforce L2P - (with 3 mode XM-L drop-in) bike light and backpack / EDC backup light
Varapower 2000 - possibly the most versatile light i own with the simplest UI but mostly used for the WOW! factor
Peak Eiger SS 10180 - worn around my neck and apart from when it's being used is only removed for bathing (so not removed very often at all) ;)
Honourable mentions go to :-
ITP A1 eos SS - one time EDC now retired to the bedside table
Raw SS - ditto above
Surefire 6P - 4D Maglite performance in the palm of your hand! one time daddy of my incandescent lights now relegated to part time bike light duty alongside the L2P with same drop-in, also used in situations where i would be concerned about damage to my L2P
Ultrafire 502b - cheap P60 host ideal for lending out especially when paired with a single mode drop-in
Sunwayman v10r Ti - would be my ideal EDC if only they made a version in SS!
But I'm going to add some custom built Mag Lites that probably will soon be at the top of my list in the next few months. Thinking about getting one with the SST-90. And maybe later adding a 12 XPG one for a super bright 4000 lumen flood light.
Zebralight H50 - easily the first. If you want to go budget the Ultrafire UF-H3/H2 headlamps are very well worth a look and are brighter and infinitely variable. Still prefer the Zebralight though.
Trustfire F22. Single nicest light ever. It is enormous for an AA/14500 light though.
Ultrafire C3 SS
Aurora Sh032/34 - depends whether you want relatively small or want to use RCR123 cells.
Varapower 2000
And the only light I took to Pittsburgh, the Xtar WK-20. Only one that doesn't run on rechargeables strangely enough. It is a strangely charming little light.
Any Mag with 4 or more cells (a 2D with adapters to use 6AA cells will do fine here) and the Fusion36 dropin. Actually mine is in a 3D with 3 NiMH Ds at the back door along with a triple XM-L light. But my backyard is only about 25 yards long, the Fusion is fine for this.
And that's from more than 150 lights. How many more I'm not sure - it is exceptionally unusual to find them all at any given time. Just found an Ultrafire U20 that I lost ages ago under the driver's seat of my mother's car. That made a crappy day rather nicer.