I will be flying from Newark in april and am not sure where to park. I know it is very expensive to park at the airport and there are so many off site lots that I don't know which one to choose. I also found a website called airportparkingreservations.com that has some decent prices but again I'm not sure which to choose. The one I am looking at is jiffy parking. Does anyone have any knowledge of it? Is it best to make a reservation? Have you ever used the website I mentioned above? Any suggestions would be a big help.