Recommendable models in this price class are the Pelikan M200, the Cleo Scribent Chiffre 05 and the Aurora Style; Faber-Castell also offers suitable models. With cartridge pens (e.g. Waterman) it should be noted that mostly only cartridges of the respective maker fit. Piston pens can be filled with any common ink and hold significantly more ink than a standard cartridge. A new nib should be broken in before important exams, since getting used to it takes time. The Cleo Chiffre 05 is particularly praised for its slim, elegant shape and good writing behaviour.