5.6 mm leadholder doodling videos

My current collection of 5.6 mm leadholders flanked by spare drawing leads and a 5.6 mm KUM sharpener. While a couple of them have built-in lead pointers in their push buttons, they tend to be less effective than the KUM or even regular Staedtler hand held sharpeners in restoring the sharp points to the drawing leads. Starting from top to bottom:

• Art Alternatives full-metal model with built-in lead pointer from China.
• Creative Mark value model with rubberized body from China.
• e+m Holzprodukte Scribbler 1600 stubby wooden barrel model from Germany.
• Cretacolor 430 12 Ecologic wooden model from Austria.
• Cretacolor 430 00 economy model made of 100% plastic with rather brittle clutch mechanism (already broke one of the 2 that I got originally after very light use) from Czech Republic.
  
• Cretacolor Ergonomic 430 15 plastic model with metal jaws and built-in lead pointer from Austria.
• Cretacolor 430 01 plastic model with metal clutch jaws that came bundled with an assortment of drawing leads from Czech Republic.

Test doodles drawn with the entire collection of 5.6 mm leadholders as shown in this 3 minute Video #1.
The Cretacolor Ergonomic 430 15 is a plastic leadholder with an unusual shape that has to be tried to see if it suits your particular drawing style. While it features a built-in lead pointer in its push button, this sharpener has proven rather useless. This Ergonomic model might feel comfortable enough, but its distinct design really allows for just two grip holding positions and can not be easily rolled in the drawing hand to wear down the lead evenly. A sanguine oil lead was used to doodle a dragon head on this Video #2.
The Cretacolor 430 12 Ecologic Wooden leadholder was loaded with a Nero drawing lead (composed of charcoal and oil) and used to doodle a second dragon head as shown in this Video #3. Really like the warm feel and secure grip provided by its wooden barrel which can be easily turn to maintain its tip sharp longer. Perhaps its only drawback is that the unfinished wooden surface readily picks up stray graphite dust and dirt. When it gets too heavily soiled, an electric eraser can remove some of the stains but it can't really return it to its original pristine condition.
The Cretacolor medium Nero lead and Sanguine crayon are both oil based, so they are fairly smudge-resistant. Making them a good choice for sketching on the go with free-flowing strokes, but they are also difficult to erase completely. An electrical eraser did a fair job of lightening a test area, but a small "ghost" image still remained on the paper. Worth trying and adding to any sketching tools collection for working on larger drawings and adding some variety to your creative endeavors.