wooden cot vs soft cots? what's E difference and what factors should we consider?

We have both a soft cot and a wooden cot. Baby naps in the day in her soft cot (nurse told me max 1 hour at a time) and the wooden cot at night. Reason being the mattress of the wooden cot is much better and it is also much bigger so we don't have to change it after 6 months to a year and get her accustomed to another bed. Babies like consistency. We bought the ikea wooden cot. Do buy one with wheels as it offers so much more flexibility. Also remember for the first six months don't use a bumper for the cot.