Until you hit proper red Freestate mud and you just want to moer neer and your son is on a 600 with a longer wheelbase and you realise what 2cm means. 😄😆
Very much the same, but shorter wheelbase. I think I'll still go for the 600, I have both currently.
400 feels like an MX bike, 600 feels like an adv sports.
600 is also much more stable on gravel.