Remarkable

What is the best stylus for the rm2's "pencil" tool? I only have a Jumbo Norris which is nice enough for fine liner and a few other pen types, but does not work well as a pencil. I struggle to get good shading through varying pressure and angled use. My markings go from ultra light to heavy without much in between despite the advertised 4k+ levels of pressure sensitivity.

Are there other term pens that work better for basic sketching? Or maybe it's just a matter of trying different nibs on the Staedler.