LOL - I don't think any of you read the OP, he asked for a, "interested in a small EDC Olight." :p
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.