Writing with the Procyon is equally enjoyable. The medium nib was smooth and free-flowing straight out of the box, and I couldn't be happier with it feels when writing. The medium is a good size for showing off ink properties while also staying small enough to use in any general situations. I love the fine nib on my other Procyon, but it can get a little scratchy depending on the paper and ink combination. If you like fine nibs when using a German nib, for example, this Platinum medium is a fantastic alternative.
Along with the pen, you get a single blue-black cartridge from Platinum. Platinum pens use a proprietary cartridge/converter attachment, so you can only use converters and cartridges that are meant for Platinum pens. Unfortunately, Platinum does not include a converter with this pen. This is one of my biggest gripes with pen manufacturers today. If you make pens and choose to use your own proprietary cartridge mating system, include a converter with the pen. Period. This is especially true for any pens above the $40 mark. The Procyon is $60, but you should purchase a converter along with it so you can enjoy your own inks. This effectively makes the price of the pen $68. Again, not a huge deal, but I'm sure I'm not alone in being so annoyed by this practice.
Gripes about retail practices aside, I heartily recommend the Procyon to anyone looking for something in the $40 to $60 range. The nib is fantastic, the materials are top-notch and durable, and the color options are fun and varied enough to fit many preferences. If you're interested in trying out more premium Platinums, but not quite ready for the plunge into 3776 territory, this is a great place to start.
(JetPens provided this product at no charge to The Pen Addict for review purposes.)