DS is 2.5 and baby #2 is coming in June. DS still sleeps great in his crib but we will be transitioning him out in the next few months in preparation for #2. For those who have already transitioned do you recommend a toddler bed or a twin bed? I'm kinda torn. My only hesitation on the toddler bed is how long he'll be able to sleep in it since he's a fairly tall kid. Thoughts?

DS 7.6.2011 TTC#2
Re: Toddler vs twin bed
We transitioned from a crib to a full size bed for each of our girls (twins) at 14 months. Transitioned perfectly. We have had 2 roll offs, but they are minor, and they both slept through it. They did not sleep great in their cribs, we assume because they have nearly no body fat that the hard mattress was uncomfortable. The full is plusher and the girls have slept through the night 12 hours straight since 14 months. We have pillows and sheet, plush blanket and micro-fiber comforter on each bed. Per our pediatrician, he was extremely comfortable with this arrangement, and was actually in favor of it. For naps, they sleep on top of the comforter with a light blanket. At night, they climb into their own beds and get under the covers.
For us, transitioning at 14 months was perfect. There was never an issue of where they slept, they didn't make enough of a connection with their crib at that point to be upset at all. Now, they climb into bed for naps/sleeping, we shut the door, they go to sleep. Best decision we could have made.