Easy car seats?

[sweetptater]

I recently took a new job that is 45 minutes from daycare and need to hire some help to pick up the kids after daycare. I'd like to buy a couple of extra car seats to leave with the sitter, since mine are huge Britax Boulevards that are a pain to drag in and out of the car every day.  

Can anyone recommend a reasonably priced convertible seat with good ratings? Bonus points for being easy to install since the sitter we will most likely hire is in her early 60s. I love my Britax seats, but need something a little lighter and easier to maneuver.  

[spankswife]

I've heard great things about the Britax Click Tight seats.

Not necessarily lighter, but super easy to install.

[vaportrail]

We just got an Evenflo Tribute for DH's car. I was pleased with how light it is.

ETA: I almost wish we'd just gotten two of those instead of getting a Maxi Cosi Pria 70 for my car.