So I recently purchased a Britax B-Agile travel system and after I did I read some reviews that had me worried. Like the car seat being too snug for infants, my kids were all small and I'm sure this one will be too, just hoping I don't regret my purchase. And I can't return because I bought if from a previous owner who never used it. Hope it's not for this reason she never used it? She just said she ended up using a different one. Anyone have this one???? Do you like it????