Lux - Tallon has been in his own bed for a few months. We used a cot for about the first 6 months, then he co-slept with us.. (and still does a lot of the time.. especially in these cold nights! LOL) but he went straight to a single bed with rails on both sides with no probs (coming into us when he woke) Same as you, during the day he slept on his own in our queen bed, so there was no probs with him feeling lost in a 'big' bed. And also I need to lie down with him to get him to sleep, so the cot quickly became a no go. So it's packed up waiting for the new bub.. even then, we might co-sleep from the get go this time, so might skip the cot altogether! hehe.

We basically got him a big bed when we were confident he could climb down off it safely.