I have carried 5 C cell Maglights for years in my vehicles, they always have worked well for me never had a single complaint so any ne Mag is a good choice.
That said, I have started carrying also the old version X0s also. The reason is I like the build quality, I think it is one of the best midrange lights available, personal opinion only, I like its runtime for emergency use, and it uses CR123s which have a long shelf life for alight that sits in the car for long periods, even in very cold weather and it should be still good and available.
Thats my choice.