Car seat

On Mondays I only have my son and a two year old girl. Once in a while I will ask the dad for the her car seat so we can go out and do something instead of being stuck at home all day. It's kind if a pain to get the car sseat from the dad then try and find room in the moms car at night to get it back home. I was thinking if buying a car seat for her so we can go out on Mondays. I don't want to spend a lot of money, what would you suggest for a forward facing car seat that is inexpensive but still really safe?
Thanks

The senera's are nice inexpensive seats. And just an FYI all car seats are tested to the exact same standards. All you are paying for is namebrand and features ( cup holders, extra padding etc)

If you are only getting one, for the occasional trip, I would just go get a WalMart special. LoL
You can spend around 60-80 to get a perfectly good (albeit basic) forward facing seat.
The only way that I would spend tons and tons of money would be if I required a certain size, set up in my vehicle.