I’ve always been a bigger fan of breaking the deal down rather than dealing with monthly/das, especially when dealing with a car where FOLP is at play. On my most recent lease, I deliberately tried to deal with only monthly/Das. That lasted about 2 minutes before I ended up having to break the deal down anyway to show how I got to the numbers and gave up on doing things based on the monthly/Das.
I certainly don’t think it’s best for everyone to worry about breaking everything down, but it seems to be what works best for me.