Replying to College decision relating to Engineering

So I know i made a thread about this before, but as I get accepted/denied to certain schools it becomes more important to weigh pros and cons.
Currently I've been accepted at Iowa State, and Boulder. I've also applied to UW Madison, Montana State, and Purdue. I live in Northern IL.
The only thing about Boulder is that I didn't get direct admission to the college of Engineering
Does anyone have experience with this?
The questions I have are...
Does it take longer to graduate?
Do you miss out on any classes.
Pros and Cons?