We are having a baby in October and are trying to decide what to buy and not waste money.

I am buying some stuff used when I can just because some of these things only get used for a few months so it seems like a waste to spend a ton on them.

I am really trying to avoid buying things more than once. Like buying a stroller we don't like so we have to buy a new one.

What things have you guys purchased that you wish you did't and what have you gotten that has been really good?

Oh and has anyone used cloth diapers? Everyone says how expensive disposable ones are so I have been looking to see if cloth ones could save some money.