i prefer having a winter baby. Having Aiden at the end of June meant that during the colder months, he was rugged up and easily kept warm. As he got more active, it was summer, and therefore, no huge worry about keeping clothes/blankets on him. Once it got around to winter again, he was older, and therefore, when he did get a cold, it was easier to deal with.
I am happy to be having a may baby, as again, easier to keep snuggly and warm during that first winter.