the only thing i can compare my 3/8" dr fuel to is a bluepoint 14.4v i've used for many years.
the fuel is approx the same size, feels slightly heavier (18v li-ion vs 14.4v ni cad)
battery is more compact
milwaukee has tons more power, i typically run it on it's middle power setting
it has a nice little metal hanging hook on the side, hangs perfectly on the lip of my toolbox in my service truck
altho it's not constantly being used, but it's used several times a day,
the 1st fully charged battery, is on it's 3rd week, and still showing half charged.
so far i'm impressed enough, i'm considering adding the fuel drill.
no battery powered tool has made me want to buy addtional tools.
