I use shade Black Brown because my eyebrows (and hair) are black (but a brown-black, not a blue-black). It's just about a perfect match for colour. Easy to use, easy to find, very affordable, lasts for months.
Easy to use - it's a firmer, more pencil-y brow pencil. If you keep it sharpened, you can draw individual hairs. If you let it go blunt, it's got a more smudgey texture, good for filling in colour. You'll have to adjust how much pressure you use depending on how sharp it is.
The wear is quite good - if I don't touch my brows at all it lasts around 8-10 hours before it fades, and my face is somewhat oily. I don't use pomade or brow powder or anything, just this pencil, and it looks great.
The spoolie isn't a proper spoolie, so I've heard, but it does serve to brush your brow hairs a little and softens the pencil lines/intensity.