Kitten or one year old?

[YouAreShoutingAtTea]

After some advice as a newish cat owner, I got a 2 year old male cat and I'm thinking on adopting another one, I have the option of a female kitten (6 months) or a 1.5 year old male... they are /will be indoors only (not really able to be outside!). Who would you think will be better to get? My current cat is a rescue as well and had been with other cats before. Can't decide, help please!

The most important thing is that your cat doesn’t get aggressive when he sees other cats or having one in his space might stress him.

The one year old will be more of a known quantity, would he be happy being a house cat? My girl is but she has the brain power of a muffin. Previous Bengal boy would’ve sprayed urine everywhere and probably killed me.