Dude, if you're going to buy cheap parts you might as well not spend your money at all. Go with a name brand or else you will have major fitment issues. I got the Injen because it let me keep my foglights, and fit the cold air intake that I have. Plus they have been know to be a fairly easy install.
Here are 3 things to decide with a FMIC:
Can I keep my foglights?
Does this FMIC fit with my intake?
What size do I need for my projected HP figures. (the bigger you go, the more lag you will have)

Make sure the intercooler you order is for the body style you have, as the piping design will vary between the sedan and the wagon.