Are you driving to CA or just looking for one to use while you're out there? If you're driving there I would look at ones that have extra padding - usually those are in the $150 and up price range. We have the Safety First Complete Air 65 seats and those are good, and if you have the $$$ people seem to love the Britax seats. However, the seats can be very bulky - the Safety First seats fit great in my Rogue but wouldn't fit in H's Accord. If you're not driving and won't be using it much you could just get a cheaper one. We have the Evenflo Tribute DLX's in H's car - $60, but we used the 20% off coupon at BRU and got them for $48 each. There's not much extra padding and no frills, but the girls seem comfortable in them so they're fine for how much they get used.