What pens/pencils/markers do you guys use?

Hey all, I'm looking for recommendations on writing materials for note taking, exam work, and homework. I currently use a GraphGear 500 0.5mm, a generic papermate 0.7 mm, and papermate inkjoy 0.7 mm colored pens for taking notes and color coding FBD's and such. The pencil's are great and I'm going to get the other GraphGear sizes for different line thicknesses but the pens are okay at best. Anyone have any recommendations on specific colored pens or even colored mechanical pencils for FBD's and such?

For reference I do struggle a bit with breaking pencil lead so 0.5mm is the absolute thinnest I can use without either bending the tip of the pen/pencil or constantly breaking the lead.