MORE SPEEDTESTS: http://scratch.mit.edu/studios/795672/ ------- This project compares the times for most of the different touching sensors, along with a test on the x position. It shows why you should use "touching colour" as little as possible - in fact, it shows that "touching colour" could be described as: ----- ONE OF THE WORST THINGS YOU CAN DO! ----- :) (In case you're wondering, testing if colour is touching colour is likely as bad as, if not worse than, just testing if touching colour, but I didn't include it here - hopefully, this makes enough of a point!) Also, this shows that it's a good idea to try to test via x/y co-ordinates if you can, rather than using a touching sensor block. Run in turbo to get more accurate timings for the faster ones.