Not tried a brush pen, but I dabbled in chinese brush caligraphy(my dad saw me writing with fountain pens and said if I liked that I should try his brushes). It's hard. Totally different mindset to using a fountain pen.
Lenovo is always pretty good value. I'd avoid their mini case units though, no upgrade space at all, not even for another HDD or SSD. The fans are crazy loud on those too. More noise than is I turned all my radiator fans to max.