DD 4.5 and DS 2.5.travel cot now outgrown and I need something for when we visit relatives. Has anyone got either and what do you think to them - also the price seems to vary a great deal, does the quality or do I just need to shop around??? ( All this is prompted by a weekend visit to friends who are short on beds and are putting a mattress down for DS - I don't want to be a pain when we vist!!)