should i be pinching out?

I`d be inclined to let them do what they are supposed to do.

The only one I would feel confident to pinch out would be snapdragons, at about three leaf height.  

I was also going to ask this question Livvy - whether it is the general rule to pinch out the leading shoot if you want a bushy plant and whether there any notable exceptions?  I have found it is a good idea to pinch out fuchsias for example - I wanted to take some cuttings anyway. 

I have also pinched out some of my cosmos and some petunias which were getting a bit leggy, so I will see what happens.

Now I've got some rooted bush chrysanthemum cuttings which I am going to pot up and I am wondering whether to pinch out the growing point on these as well?