Where’s the button for AAA? 
@ DavidEF
The one in the middle is a 14500 light, a DQG Slim Ti 
So I wanted to show that some AAA lights , such as the Olight I3T EOS (right) and a generic 2€ Zoomie from a Chinese store, are bigger (although a bit “slimmer”) than the DQG
@ Agro
It is cheappo light, a zoomie one ! Bought it in chinese store as I wanted to mod it but…I’ll let it go! 1 mode, put an XPG2 inside only and I call it a go 
EDIT: Stooopid me, only now I notice that the “,” (comma) was indicating the answer and not an enumeration :person_facepalming:
I get what you say now, DavidEF
DQG Slim! Ah, I missed the joke! 
AAA.
I also like AA but consider that medium sized.
I don’t normally need big lumens from smaller lights. So I prefer nimh for availability, cost, and stability.
x2
I had a dream about an AAA size RRT-01 with LVP, then I woke up to my Phat TCR-1 with an unprotected 18350…
The perfect light is a combination of features, none of which exist in any one model.
Same as Women.
I like to have more than one.
.
Does Size Matter?
from shortest to longest:
short and skinny: ET 16340 2.9”
longer and fatter: RRT-01 18350 3.2”
long and skinny: ET AA 3.4”
Four of my favorite small cell pocket lights.
LAN Mokume Gane XP-L HI 5000K, 14500, Electronic Tail Switch.
FourSevens Atom XHP50.2 3v 2A, 16340, Reverse Clicky Tail Switch.
CRX CuTi Zoomie KW CSLNM1.TG, 18350, Forward Clicky Switch.
CRX Rotary XP-L-HI 5000K, 18350, Rotary Lighted Tail Switch.
Definitely 14500
14500 for the same reason as everyone else - slim. I would’ve thought 18350 got more votes for drain rate and capacity but there you go…
14500 lights are my choice. I like the slim profile.
14500. Because its slim and the ability to swap out with a AA.
For the last few years, it’s been the EagleTac 2014 D-25 25 ti. clickly.
Chris
Ah, I thought they were all AAs.
I am looking for a really slim AA zoomie and this looked like one.
Yep as a clicky the eagle tac and the xeno es1 are the same size (small and thin ) Eagle tac takes either battery and the xeno only wants the AA..The old Eastwood / blf light modded with a nichia is still a very small nifty lil clicky.
In a twisty the old Thrunite T-10 and the jet beam are nice and small too .
Still love a plain old nichia 219B Lumintop tool at only 20 grams with a battery it's often found clipped to my collar .
Nice part of having lots of lights is they are what they are and if weight is an issue than leave it on the shelf . I still love some AA lights that are bigger than some 18650 lights ....just not all the time .
Don't need to bring a gun to a knife fight
I prefer the 14500 format because most of them can run also with regular AA battery.
i would say 16340 for me then, seems to be my fav i would have to vote.
Among these three, 18350 for sure. For me, capacity is everything, and it’s one reason why I have two 16340 torches and hate both of them.
But for real, I won’t go below 18650 and don’t plan to change that opinion anytime soon.
I agree.
18350 for capacity, but I don't even use those because 18650 cells have the most capacity per volume.
(Except for maybe 21700 cells.)
That and 18650 is just a nice compact format for a dude of my size. The heft and bulk are just enough to be noticeable without being overbearing.
Haven’t tried a 21700 yet, it’s a bit too exotic (so few options for lights on the platform) and expensive for my tastes, and the torches that fit it don’t have runtimes that seem to take enough advantage of its mAh like 18650 ones do. Maybe when it’s more mainstream and more picks are available on the market, I’ll pick one.
I feel the same about 21700 cells.
Not many choices so far, though it's probably the cell of the future.