I'm new at the bike shoe game so I was just looking for a shoe that fit my foot. I bought both the 510 Freeride and the 25'accomplice to compare each one. They seem to have similar Flex. The 510 is a wider shoe but they have a bad toe box shape. They tapered at the big toe to the center of the shoe which pushed on my big toe and felt awful. The Accomplice we're about the same length but at the big toe they go straighter like a shoe should (could be more straight even). They have a much better toe box shape, still taper/push on my big toe but not uncomfortably. The are definitely tighter On My Feet and I had to take the insole out for more room but I would rather that than have my toes crushed.
I’m thoroughly impressed by these shoes—their outstanding craftsmanship places them among the finest MTB footwear available, engineered with meticulous precision and unrivaled quality.