Wow this is wonderful. If I’m just doing a local walk I take my Canon point and shoot. If we are touring I take my honker, my Nikon. You have some great cameras there.
Nice capture of your three diverse cameras! I have a little Canon PowerShot which I was using all the time until I was given a Nikon DSLR for my birthday a few months back. I had forgotten what nice photos I was able to get with the little point-and-shoot until I loaned it briefly to my ten-year-old grandson. I think I need to carry it with me always for those moments when I won't have time to fiddle with all the settings on my Nikon. :-)
Your selection looks very similar to mine- I like Canon too. My point and shoot is an Olympus and it's come in handy when I needed something quick. But it depends on what my goal is when it comes to choosing between the Powershot and the T3i. Happy shooting!