Hard to judge pics isn't it.
I think you need 3 criteria, and a mark out of 10 for each.
a) Focus, I HATE SEEING PICS WHISH ARE NOT IN FOCUS!
b) Clarity, some pics are focused but they are still grainy, sometimes because of a dodgy camera, sometime due to over cropping.
c) The Capture, what is it? A snake in a strike pose, a Gecko giving you those "It wasn't me" eyes aka Saz. etc. I think a good capture is something that captures you reptiles personality, something very hard to do.
Anyways, just my 2 cents. Personally, haven't seen one better than Saz yet, moosy yours is awesome, but there is just that extra element in Saz' that makes you ask a few questions like
What is he thinking about, or up to. What does he think of that Camera in his face, I wonder if he knows we can see him even though he is remaining absolutely still lol..
Steve