Go for both... the 27" iMac ... But umm honestly I just buy a computer based upon its power, not its looks. I put together my past 3 computers myself and each one is not nearly the best looking computer, but you know what, it gets everything done that I need to get done. Until I start making more money, I can care less about the looks.
In due time I will have a nice enough job and life where I can afford a 27" iMac, and after I finally get it, I'll probably use it twice and then start using my old laptop again.