I have the Stokke cot and love it. We got the bassinet conversion but not the toddler bed one. DS stayed in the cot till a couple months after he turned two. The only reason we moved him to a big boy bed was because we were pregnant and I wanted to use the cot for the new baby (wasn't about to buy a second cot after having spent so much initially). Personally, I wouldn't bother spending the extra $$$ on the toddler bed conversion. You can remove a side from the cot and it is big enough for them to stay in for quite awhile.