a single cell for EDC i want one that takes one batttery..
What's your budget? What kind of beam are you looking for (more throw, more flood)? What kind of interface (tactial? selector ring? multi-mode?)
Here are a few lights I can think of really quickly :
Fenix TK11/TK12, Jetbeam Jet-III M/RRT-2/, Eagletac T20C2 Mark II, Olight M20/M21, Malkoff MD2 with M61, 4sevens Quark with optional 18650 battery tube.
There are a lot more, other people will suggest more lights.
I EDC my Surefire 6P bored for 18650 just fine.How do you EDC a light? I don't consider any 18650 an EDC light - too big. My EDC is a Quark 123. The reason I ask is that you want a light with great throw and those all have big heads which make them even bigger (and even less of an EDC). Deerlight DBS, Tiablo A10-G, Jetbeam RRT-1, Solar Force Masterpiece are all single 18650 with amazing throw but I would not consider any an EDC light. Look at my avatar picture. My Quark 123 EDC on the far left and Jetbram RRT-1 on the right - big size difference.