We will be flying and renting a car for a beach trip this summer... we will be doing a lot of driving and will be gone for about 10 days. Would you rent a car seat along with the rental car or gate check your seat from home?

I am totally torn and the internet is not helping - some people say they would never rent a seat because you don't know the history... other say they would never gate check a seat because you don't know how roughly the seat will be handled by the baggage people. (I have ruled out checking our seat as baggage because I *know* that stuff gets thrown around.) On one hand, it will be a huge pain to lug our (heavy, big) car seat through the airport, but on the other hand, I am not sure I feel good about renting a seat.

What would you do?