Neither Pixel nor Widget made a peep when we visited them twice. In fairness, the first time they were still quite tiny and in a room with their mum. By the second time we saw them, their mum was already off trying to find her next mate whilst the kittens played with the family in the living room (she still had access to them but was content on leaving them for short periods at a time). Actually it was quite funny, she was pestering one of the boys who didn't know what to do with her. She was calling at him all the time and the breeder said he was so confused by the noises she made he wandered off, picked up a ball and brought it back to her to try and shut her up!!
Anyway... back to the topic in hand...
Widget was all cuddles at the breeders house. I think he was secretly the breeder's favourite as he LOVED cuddles with her.
Pixel was all about playtime. Was a bit wary of humans unless you had a toy. Didn't like cuddles and didn't like being picked up.
When we picked them up we expected Widget to be the brave one on the journey home and Pixel to cry out (as she seemed more timid). We were wrong. Widget cried his little head off all the way home and Pixel curled up and slept in the crate for the entire journey.
When we got them home Pixel was very timid and wary of us. Widget was bolder and braver. Both were still fairly quite as far as meows went though.
As time went on they both seemed to have a personality transplant. Pixel is now the biggest cuddlebum known to mankind and Widget is a lot more aloof. He likes cuddles after waking up but once he's had his fill he is off to cause all sorts of mayhem. He's actually the more troublesome out of the two now, whereas it used to be the other way round!
As far as talking? They both talk a lot. Pixel makes these awesome little 'baby dinosaur' noises when she's wandering about/investigating. When she's after cuddles she meows a fair bit and I can often strike up a conversation. If I use a certain tone of voice (almost questioning, I s'pose) she'll answer back most times. (They've turned me into a crazy cat lady).
Widget meows when he wants fuss too. He also wanders about the house meowing his head off. If I call to him he'll sometimes come trotting in so I think that's his way of communicating when he's looking for me/Pixel or just letting everyone know where he is. He also has this pretty awesome meow when he wants something, be it food or fuss. If I'm not doing what he wants quick enough he lets off this meow that sounds like he's saying "now" in a really elongated way. I can't explain it very well but it's basically like "NAAAAAOOOOOW!" He's a very demanding kitty!
They both "chirp" when they see something to hunt too. Be it birds outside or bugs/flies/spiders. If a fly gets in the house they'll both go bombing after it and will "chirp" at it when they know they can't get to it. I've never heard a sound like it before so it's quite funny when they do it.
I have lots of fun with my two.