I was very impressed upon receiving the onboard 35 air protect +.
I had an older model for my first child which I thought was safe and had the best head protection but this is quite an improvement on safety and comfort. I've learned to always pull back the fabric when choosing seats to see what the 'bones' are like. This has impact foam lining the entire back of the seat as well as the sides (in addition to the pillowy air cushions for the head.). Most seats are just hard plastic on the back and sides. Where I was extra surprised was in comfort! The back and bottom of the fabric covering are very generously padded. So, once your child outgrows the cozy infant insert, they will still be pampered with a very comfy cushiony feel. The canopy is quite large and has an extra little visor you can flip out or keep under and there's strong velcro now holding the back of it to the seat. The infant insert is in 2 pieces so you can customize as your child grows and it has a separate cushion to cover the hard crotch buckle. This is a posh seat at not a posh price, especially if you buy it here on Great Offer Stock. I think this is the best infant seat on the market right now if both safety and comfort for your baby are top prioritites. Don't heisitate to order this, and make sure its the air + (I don't think the regular air has the extra foam core and cushioned lining)