Waterman drops out due to the stated criteria, as does a Pelikan, whose models in this price class tend to fall too small for the requirements. The Lamy 2000 is a recommendable choice for the described usage purpose. The often heard myth that an EF nib has a worse ink flow than an M nib does not apply; decisive are matching ink (e.g. Lamy Royal Blue) as well as the care condition of the fountain pen. With small handwriting, practically only EF, F or MK come into question; a test in a well-stocked specialist shop with qualified advice is sensible.