Awww, look at that picture. Josie does need a buddy. I think the fact that she was purring and not switching her tail and getting riled is an excellent sign that she would love a buddy.

I would go with close in age or younger. If you went with younger, as in a kitten, the intros would probably be a little easier.

I have to agree, having three has been no more trouble than just one and I had Ripley for 10 years before I got another cat so I really would notice the difference. All I see is a little more cat hair, I have to clean the littler boxes a little more frequently, but still just once a day, and there is always someone available to pet or play with when I'm ready! The cost increase in cat food isn't that much and since they are inside we don't have lots of vet visits needed.

Oh please really consider it. You'll be saving a life if you adopt from a shelter or rescue and trust me, it will be worth it!!!!