Nice cartoon RA

I tend to agree with the shift towards blinky 21.5 class as a viable replacement for the venerable 540 motors. I like racing in 540 as it is quick enough for my skill level and still relatively "cheaper" then some other classes, however due to the inconsistency in the performance of each 540 motor it can just be as expensive to get that 1 motor that performs.

Yes some 21.5 motors may be "better" then others but I believe some perform better at different tracks and/or track layouts etc.
That's where half the fun is I believe, matching a motor to the track and your driving style etc.
Another plus is with no brushes there's less maintenance and if you want to change the bearings you can do that too.

Cheers
Rob.