I have a related question. I couldn't find anywhere in the rulebook that says I can take the same metamagic feat more than once but since you're asking about preparing 2 or more quickened spells, I'm thinking that is how it works. Does this mean that as a wizard, I can take the same metamagic feat (ex. quickened spell) more than once as long as I use them on different spells when I prepare spells?
The alternative I was working with is that I can only take a metamagic feat once and therefore only use each metamagic feat once per day.