Also, to add to what others have mentioned, there are some breeds that have tendencies toward certain characteristics. For example, Siamese are known for being rather vocal and talking a lot. Maine Coons are sometimes described as dog like in their behaviors. Of course those are some generalizations and individual kitties will have their own personalities that don't necessarily conform to others of a particular breed.

I used to think that I was definitely NOT a cat person. I thought they were needy and demanding that just rubbed up against you and wouldn't leave you alone. Then I got a kitty. WOW. Now I have 8. LOL Kitties are great, even the snotty ones with their superior attitudes.

I bet that the kitty that you described as scratching you for no reason was trying to play. When my Morgan was little, he would hide behind furniture and jump out to "attack" someone when he/she walked by. Then he would take off running. It was a game. That's how he got the nickname Boogy Man. If a cat were trying to do damage, you would definitely know it.

I also wanted to comment on your idea of adopting an adult cat. That would be a very good idea. Perhaps a foster person or the shelter could give you some glimpses into its personality. And older cats don't have the energy of kittens. They are the most wonderful things in the world, but oh my are they work! Keep us posted.