In reply to Max factor:
The Dragonflies (Dragonflys?) have a rather lower range than other tiny cams, and this was enough to persuade me to go with alternatives. An extra mm doesn't seem much but it's 15% of your total range and may well be the difference between grabbing the right cam or not.
I ended up going Dragons down to 0 (silver) and then switching to WC Zero cams below that. WC Zero 0.3 (blue) fits nicely just beneath Dragon 0.