Topping - Anyone who has grown CH9 Jack, Monster or Jamaican Dream (Eva Seeds)?

A have one of each of these strains 3 weeks in veg: a Jack from CH9, a Monster from Eva Seeds and a Jamaican Dream from Eva Seeds.

Wondering from anybody who has grown any of them if you topped them and if the plant responded well. I was thinking about topping the Monster and the Jack in particular.

Here are some pictures of them anyways...First 2 are the Jack, second 2 are the Jamaican Dream and the last 2 are the Monster.