I own three pairs of MX20s for Crossfit, and decided to branch out a little (gasp!) and buy this "v3" edition as my latest shoe. Sadly, it's just not quite the same as the originals.

I love the aesthetic and the mesh breathability, but I found this sized slightly wider/looser than the other MX20s I have, and the back of the heel rises a little higher meaning that thin no-show socks aren't a good option.

I did find that this meant the shoe fit a lot better with my cushy Experias than the other '20s, so I am going to pair them together like good wines and cheeses. Maybe worth trying more cushioned socks if you are experiencing the same issues I did.