I collect vintage and modern fountain pens that I use for drawing and (almost illegible) writing. Big fan of my old Parkers (especially Vacs and Striped Duofolds), Watermans, Eversharps, Mabie Todds, and yes, no-name wonders with flexy nibs. I also have a small collection of hard rubber Golden Rule pens from the 1920s, small third tier brand, but nice pens with a great motto: "Serves you Write." And of course I have a few Esties in the case, too.
Modern: Pilot VP, Custom 74, Prera, and Falcon (but dream of a 743); a Delta, an Aurora 88, and my current favorite, a Fountainbel Conid Bulk Filler (in which I rotate several nibs, old and new).