With this charcoal/graphite page, I found I like some types a whole lot better than others and I was surprised at how much effort it took to get results out of some of the vine charcoal.  I tried everything I had, which is quite an extensive grouping.  The two streaks are from using a kneaded eraser and the polymer eraser to see which I preferred.  I actually think the kneaded eraser did a better job.  Across from the erasure marks, I tried the blending stump.  It did a fine job blending and kept me from using my fingers and adding oils to the picture.  I really preferred the graphite pencils although I did not think they had the same range as some of the charcoals.