It depends how long you want it to last for, if you don't mind buying a new one when he gets fed up of Thomas. The other one is nice but quite cot like. I don't like the sides on either one though makes snuggles to hard and also he might think they are a bit babyish when he gets to four. We bought the mammut toddler bed from Ikea for ds he's still in it at nearly five and theres plenty of room for us both to lie on it for a story. He too has a small room so I am putting off a full size bed as long as possible.