The V4s are epic but they’re too much. I’ve had a good ride on both and the V2s are nimbler, gruntier in the midrange and feel more fun. A proper hooligan bike (Still fucking fast.)
The V4s feel more stable / serious and are hang on, terrifying, millennium falcon fast. They do twenties mpg too.
The late model V2 Tuonos are fucking excellent. Swedish racing gold bling aside, the front Showas are really good on the regular one.
I like the V2 better than the V4 as a road bike, especially for Mountain action.