I highly recommend NOT going with a travel system--- the strollers are usually very bulky/heavy and you don't actually use the stroller until baby out of the infant carseat. My friends recommended that I get the Snap N Go to use while baby was an infant and I'm SOOO glad I did. Then, when he was older, I could try him out in different strollers and pick what I wanted.
Re: So, what exactly does a "travel-system" include?