Hey Mate, my first snake was a diamond, straight from the egg she was the most placid I've ever had, Just bred my first clutch of diamonds this year and all calm and placid, I've bred childrens and stimies the last few years and have to say they are a bit snappy for a while till they settle down, very good escape artist too. Diamonds love the cool weather, I keep mine outside all year exept the really hot days here in sydney, need the uv though. Is it the size that attracts you to the childrens? Even murrays or bredli are good tempered snakes, get a bit larger though. What ever you decide on you will love, all good...all the best.