Hmmm, I do see your point OP - it's hard to enjoy a film when your expectations for it are so high already, and the media hype does nothing but build it up. However, until you've seen it, I wouldn't go starting threaRAB about how it is "cheap" (seriously, a film does not need a massive budget to be good anyway, and no part of this film felt cheap to me), and comparing it to other films.
As I say, it is slightly awkward that the excitement surrounding the film may hinder people's enjoyment of it, but I really do think it's justified on this occasion. From what I saw, Juno received A LOT more hype this time last year and it is a weaker production in my opinion (though I still like it).