When you're ready, will you switch to a toddler bed or a twin bed?

Erica

If you have already or when you will be ready to change from a crib will you move to a toddler bed or a twin bed?

We have twins that should be here in approx 6 months but my toddler loves his crib so much so I'm trying to decide if we do move him to a normal bed should it be a toddler bed or a twin bed with rails.

Thanks for your opinions ladies :)