To everyone who responded,
A big thank you!
Based on the responses, the hands-down favorite is the HDS Clicky. The various 4Seven's Quarks are popular with a small variety of others.
After reviewing the HDS Clicky Tactical, I feel this will be a good choice as one of the 2 or 3 I will ultimately carry depending on the situation.
However, this past weekend, I found myself in a situation where I realized one of the most benefitial purposes of having a small EDC was where I was within crowds of people and the light I had brought along, projected too tight of a beam and that a very flood-oriented light would have been more beneficial. In this particular situation, I would have like to have had my Zebralight H31 headlamp which I have come to use more often as a flashlight, than as a headlamp, particularly around my sleeping family because of its .05 lumen mode.
Anyway, I saw the HDS Clicky Executive YouTube video made by Marshall of GoingGear.com and it looked to me that when he was describing it at his table, that the hotspot was very tight. And I understand that the Tactical would be even a tighter hotspot. So, even though the HDS Clicky will definately be on my wish list, I need to look for another 1x CR123 light with a predominantly flood-based hotspot.
So at this point, I already have the ZL H31, but I prefer to keep it in the house except when I use it as a headlamp. Like the H31, the ZL SC30 is too small for carryling outside of the house. The ZL SC60 would be great, but it only takes a 1x 18650, which I may still consider, but I'm one of the few who prefer the different strobe modes made available in a hidden group, but which ZLs don't have.
I'm probably going to try the Quark 123 (non-tactical) due to its size (3.2"), it's multi-modes, its apparent dependibility, its modularity and its value at only around $60. Based on a recommendation from a CPF friend, the hotspot is described to be what I'm looking for as more flood-oriented.
Additionally, I have pre-ordered the new Klarus NT10 that is being offered by GoingGear.com to see how that light might fit in with my needs. If the Klarus performs as I'm eagerly anticipating it will, this will hopefully be a keeper for its one-handed-two-switch design, multi-modes, its size (3.5") and its relative value at $60.
Although, I will remain completely opened-minded about other possible options, continue to accept your recommendations and will probably trial different models over time, I have to finally make some choices and I hope the above choices will meet my intitial criteria here in the near term.
Thanks again to everyone for your responses and I wish all of you, the best this life has to offer.
John