This is my 4th baby, thus my 4th diono carseat. The infant support upgrade from the RXT is amazing. My baby was born 5 weeks premature and sits so snugly in the new design. However, I hate the new crotch buckle design. Each metal connector has a hook on the bottom and it gets stuck every time I try to unbuckle my baby and it sometimes gets stuck tRead more about review stating Love the new infant support, hate the new buckleso the seat itself underneath his body. The safe+ pod on the side seems pretty useless too. It's just a chunk of plastic and it broke when my husband barely bumped his elbow on it, so I don't see how it could help during a collision anyway. I've only used the seat for 3 weeks, so it's disappointing that it had already broken. It's also very difficult to buckle my baby in with the lower pad on the buckle because it just gets in the way right now. I miss parts of the old design, but overall I prefer this seat. My baby looks very safe and secure.