
Thanks to the diligence and generosity of my traveling cousin Cuti, I now got the opportunity to actually try the top-of-the-line professional grade pencils from Japan's two major pencil manufacturers:
Tombow and Mitsubishi. This awesome stationary bundle included the
Mitsubishi Hi-Uni in HB, 3B, and 4B; and the
Tombow Mono 100 in 2B and 5B hardness along with a unique
Kokuyo eraser. Both pencil lines are quite difficult to find in the USA, and have a very distinct look with gold bands decorating their uniquely designed black caps (The
Tombow Mono 100 has a white line that runs vertically across the cap, and the
Mitsubishi Hi-Uni has an orange yellow dot on the crown of the cap). On my last trip to San Francisco, I was able to get a couple of student grade dozen-pencil boxes of
Mitsubishi Uni-Star in B and 3B and a box of
Tombow Mono J in F.

Thus, it was possible to do a simple comparison between the student and professional grades of
Mitsubishi pencils in 3B. While I did not set up a proper blind test, the
Hi-Uni seemed to glide more smoothly when sketching over the same paper surface. The
Hi-Uni yielded a darker line with less pressure than the
Uni-Star. For such a soft-grade pencil, both erased reasonably well (the Tuff-Stuff eraser stick left a few faint marks that the scanner could not pick up) and were fairly smudge-resistant. I suppose the smoother quality of the professional grade pencil strokes might translate into faster rendering which cumulatively represent time-savings, so it's a pitty that such pencils are not so easy to find on this side of the Pacific Ocean. Yet I suspect beginners would find either grade equally pleasurable to sketch and draw with once they adjust for their handling properties.

So don't hesitate to try them if you happen to come across them online, or if you get the chance to visit a
Kinokuniya or Maido Stationery store in San Francisco or San Jose.
Update: Now is actually possible to order singles and dozen boxes of
HB Tombow Mono 100 pencils through the
Pencil Things website. And according to their
blog, they might be carrying the
2B pencils by February 2008. Hopefully they will also start carrying some of the softer grades of
Mitsubishi Hi-Uni.