Very well said, Ruari!
If we suddenly received the opinions/poll response of 30 dedicated Trials, Flatland, and/or Freestyle riders, the poll would/might experience a huge swing in size choice.
Today, I actually had to make this choice. We are headed out of town on vacation/holiday. I have a 36” group ride to participate in when we return, so I was going to take the 36”. But, we will be in the woods/forest with many areas for Muni. So, I was also going to take the 27.5 Oracle. But, that area is very fun for the 24”, so I thought I would also strap the 24” with a 3”Duro tire to the cargo platform.
Our son? He chose a 26”, as he can do anything on it.
As it turned out, strapping all four unis to the cargo platform was more work than it has been in the past, and I needed the cargo platform for luggage.
Instantly, the plan was to remove the seat post of one uni for each of us, and put the unis inside the vehicle. I had to choose one.
So, my choice was the 27.5 Oracle to have any chance of keeping up with my son and to fit inside the vehicle.
Since “it didn’t really happen without a photo”, a photo is attached. Prior to snapping the photo, I put an Ultimate Wheel in the vehicle. That had to be removed due to space. (When you run out of room for an Ultimate Wheel, the photo looks very different than the one you see .)
Dry pantry goods in the box, cold items in the ice chests. You can barely see the Duro Crux 27.5x3.25 tire on the left and my helmet in back.
All of this brings me to a thought I had today. My answer to the poll might be different, dependent upon the context.
For today? The 27.5 Oracle.