I've tried all kinds, and I really prefer the drugstore variety, generally L'Oreal.
Currently I'm using this one in black
It used to be that they pushed the natural look, now the mascara is supposed to mimic the look of false eyelashes.
It's not bad (she says while batting her lashes), but I find the brush too long and a little awkward to use. I'll probably go back to the L'Oreal Double Extend for both volume and length.