I agree about the simplicity. Something that I like about our logo is that it's shape can be easily recognized- I have yet to see a team with a logo that is similar to ours. This makes it much easier for us to be recognized at competition, and people can much more easily associate the logo with our team.
Additionally I'm happy that it has been around for so long. The CircuitRunner is just about 15 years old, and I've met many people-at competitions and doing outreach-who have seen our logo years ago and were still able to link it back to us.
Here's our current version:
