I'm looking to start buying nursery furniture and I'm wondering if anyone can suggest cot brands/types that I should look out for? I like the Boori ones but can't justify the cost when we will need to buy 2 and aren't having more children to make use of them again. What do I need to look out for? I have read that one handed drop sides is important, is there anything else? Also, how do I choose a good mattress?? We will sleep our girls together at first but still buy 2 cots ready to go.