I don't know how "throwy" single CR123 Olights(T-10 I-20) are, but with 2x123's the M20 does have some good throw to it.
Kind of on the large side for an average persons EDC though.
If you want the better throwing single 123 lights; perhaps you should take a look at:
The JetBeam Jet-II PRO ~ The Jetbeam RRT-0 ~ or the Nitecore SR3.
They are more EDC sized and still throw amazingly well, beating many larger lights at the "throw" category.
LOL - I don't think any of you read the OP, he asked for a, "interested in a small EDC Olight."
Anyway - the T and I series light all use a similar hybrid reflector (except the T25's and I25's which are OP) so basically the brighter the light (lumens) the further the throw.
So an I20 would have the most throw followed by a T20, then the I10 then the T10.
If you require 1x18650 you will have to go to the M20 which is slightly above the EDC size class IMO but is an awesome light which has great throw as noted by the other posts.