I really like how you captured the feel of what we are after. I prefer the simpler one with two figures, over get too complex. However in the more complex one, you have successfully brought out the "with" which I do want to emphasize. Anything that give the impression of working together is good.
I think we have to incorporate the words Perth, 21/22 May somehow. Thanks so much.
This is a really good series of designs. However, they seemed to lose a bit of clarity with the extra information on date and place. I do want that information included, but it needs to be a bit more readable. These are very clever and I appreciate your work.
I like the excitement of 45 but to me it looks a bit too much a sporting event logo, rather than an innovation conference. I think the others are better