I have both seats. A Solvit and the Snoozer. The Snoozer is really worth the extra money. It is actually strapped in with your seat belt and another strap is wrapped around the seatbelt to hook to your baby's harness.
The Solvit is not as securely attached to your seat. I don't think it's even meant as a safety device. I stand to be corrected, but I believe it's just meant to serve as a booster.
Sadly, if you have front air bags, your baby would probably be hurt or even killed from the force. I've read it's safest for your pet to ride in the middle of the back seat. My opinion is the Snoozer is well worth the extra money.
