My group of EE chicks were fairly calm about any activity in their brooder (moving the feeder/waterer to refill, etc) and while they might go over to one side and start active peeping, they were fairly calm.
We didn't really pick them up and hold them much but now that they are out in the coop, I make a point of trying to pet them while giving treats. They don't really like it and some will just jump away when I reach for them, but they are so greedy they'll usually let me stroke them a bit while they gobble down a treat.
My batch of BCM's on the other hand, go into a screaming, thrashing panic whenever I reach into the brooder, or even stand over it!
Totally different personalities. I make a point of taking the one I think will be a roo out each evening to sit on the couch with me but of the others, I can't tell one from another. They're all black and look the same and the way they go into a panic, if I pick one out to hold, when I put it back and they all go running about at once, I don't know if I'm catching another one or the same one twice. It's like playing Three Card Monte! So, I usually just stick with the one I recognize and the rest get left alone to calm down on their own.
I don't even know if picking up the one is doing much good as he still goes into the same panic as the rest when I reach in.