Peg Perego car seat - or you're a bad parent.
In all seriousness though, they make a very good car seat - and probably the area to spend a bit more for quality.
As for stroller, we have a Baby Jogger City Mini GT. Very good stroller - light, agile, easy to fold and store. The only downside is that it's top heavy with the car seat attached for when the baby's young - on uneven ground it can tend to feel like it wants to tip.