I shopped around for a new infant car seat for weeks as my two month old was quickly outgrowing my 22 lb rated seat. It's really hard to find a padded comfortable infant seat! The other seats are minimally padded where the baby's back and head rests. The SnugRide Click Connect 40 is designed so much better than the rest of the seats out there. The structure of the seat is really sturdy and quality feeling. The padding is nice, I don't feel bad when we go over bumps anymore! The head rest eliminates the head falling to the sides and my son is very happy in the seat. The base is really sturdy and was easy to install. We have leather seats and I appreciate the smooth base bottom as I do not anticipate any seat damage (I put a towel under it just in case).
The seat as an infant carrier is a bit heavier than my old seat, but I do not think its from the weight exactly, but from the seat being wider so it is farther out from you when you carry it. I use it as a carrier and do not have any problems.
The fabric is really nice looking, we got the moonstruck pattern.
The only thing i can ding it for is the sun shade gets in the way of the carrying handle and can be tough to move back if you want to see your baby from the front seat, but there is a flap that pulls down and you can see through that to the baby, so I have gotten used to that.
There is an extra panel in the sunshade that I discovered by accident that flips out to give a few more inches of sun/rain protection for your baby. The recline is easy to use on the base, and I love how easy it is to adjust the harness height. We have this seat installed in our super cab F350 in the middle of the back seat and it fits just fine.