Obviously the replies you've already had probably tell you everything you need to know but for the sake of confirmation I thought I'd just say that as a former owner I agree with all of the above.
They are very gentle but owning two it was surprising just how much they differed in "personality". Our first was the firm favourite. It was the coral sort of colour I believe they call it. Fairly "boring" by some owners standard but also cheaper. She had an absolutely wonderful temperament and never once bit, even when our local vet visibly hurt her when having to remove the tip of the tail.
It's worth mentioning what happened I think so you can avoid the same issue. She managed to shed all of her skin except maybe the last half an inch of the tail. This went unnoticed for too long unfortunately and resulted in constricting the end of the tail to the point where it died and the vet gave it a bit of a pull.
The other thing I want to confirm is the escape part. They WILL escape given half the chance and they are a very active snake. Unfortunately for us that meant she escaped one night, never to be found again. My only theory is she got out and the cold eventually killed her or perhaps a cat or something. I was really gutted though, she was lovely.
We had another corn at the time too, a male albino. We bought him with the intention to breed with the female as you can get some fantastic colour variations but we didn't bond with him the same way so eventually sold him on. He was much more skittish and bit the wife once too, although as said their teeth are very fine.
Just to throw in a bit of a variable, take a look as the ball/royal python too. Again, very well natured. Never bit but very different personality wise. Was much slower with movement and not quite so active as the corn which is constantly on the move. The python use to quite often curl up on my chest whilst I watched TV!
When you mention a Python people often imagine a big huge 20ft thing but they are nothing like that. Normally they won't get as long as an adult corn but will get a bit more girthy.
Final tip with the frozen mice....
Rather than waiting for one to defrost on the side, just put one in a sandwich bag from the freezer and dip it in to a bowl or mug of boiling hot water for a couple minutes. It instantly defrosts and is nice and warm to the snake. Irresistible!
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