Oh...answer to your question....
Sizing and class of vehicle is the most important to me
Very high on my 'have to have' list...aka performance and ratings.
Note that all things designed is not for the good days out there, when a riding
lawn mower 'can do it'. But for the worst day out there when Mr Murphy crosses
you path.
Either you have the right stuff or not. No time to go back to the store to buy
bigger stuff. Nor time to resetup the system
I prefer to have the biggest I can afford or get.
To then know it's ratings and live by those ratings.
Only you can make that risk management decision...aka...gambling...unless you
are only looking for those 'sure you can'...which you will get tons of