Replacement car jack for S80

I've found the portable car jack that comes with the S80 to be unsafe and difficult to use. I want to buy a better, safer jack. Does anyone have a suggetion for something that is portable enough to fit in the trunk, relatively light-weight, and can be used with the S80 jack grooves? (Given how much I spend on repairs for the car already, price is not a big consideration; safety is.)

my mom has an s80 t6...i remember once changing a tire and the jack slipped and put a hole in the plastic part right underneath the door, needless to say, i was very disappointed in the design of the jack setup, but i dont really have an idea of what to do differently, especially since its not my car. good luck though