We have never kept poultry before so its all a bit new, but there are plenty of books and websites with loads of info that has helped us a lot.
Both Australorps and RIR's are known to be friendly, sociable birds, not flighty or nervy (all important when you have kids wanting to handle them all the time!) and very good egg-layers.
I am hoping they will start laying soon, but in the meantime they are lovely pets and giving us plenty of manure for the compost!
Only problem is our dog who thinks we have bought him some new toys .... or lunch? Was hoping the chooks would free-range and he would ignore them, but no. So taking turns who has the back garden for now....