Which one is better for a Takedown and why ?

Muzzle break imo because reduces vertical recoil from which Takedown suffers while firing fast.

Overall, I'd have to pick the Muzzle break; but it really depends how you want to play. If you ADS a lot, then the muzzle break is the best due to the reduced recoil; but if you like to fire from the hip a lot, then match barrel is best due to the increase in accuracy...

So... it depends.

Match barrel, to those that know how to adjust to recoil accuracy is everything. I don't think i could use my Takedown or Grendel without it.

I ADS mostly and currently use Muzzle break

I say Muzzle Break on the Takedown, but on any automatic weapon I'll take a match barrel any day.

It's a matter of choice, I prefer Muzzle brake. Weapons without attachments are flawed anyways, so yeah ...