I have two cats who are now 9 years old. They were adults (18 months) when I got them. They were born to a feral mother in a barn/shed. Frankie is short haired and loves food apart from him being asthmatic he is a lovely cat. His sister Merlin is long haired, stupid (says the vet), short tempered and vicious. She bit a workman and went right through his thick gloves with her ever so sharp teeth.
They are indoor cats and I thought that this would mean that they would play together and curl up for a snooze together - they probably would if they liked each other. Merlin beats her brother up and then sits and licks her paws and claws.
Basically - you really don't know what you are going to get until they settle in and reach adulthood.
But you have been through it all before, don't worry - in no time at all they will tell you what they want to eat and when meal times are.
http://i.imgur.com/I2fgMDC.jpg
http://tinyurl.com/lpfnbkn
Here is more info to read through
http://www.vetstreet.com/cats/
http://www.icatcare.org/advice
The last link is for 'Pete The Vet' who is on Facebook, Telegraph, Irish TV etc -
http://www.petethevet.com/wp/ He seems sensible in his approach to feeding and caring for moggies (and other animals).
Good luck