I've got a Diplomat Aero in black and orange. The nib is a steel medium, but a gold version is available. It writes well enough, although a bit prone to dry starts. It's a heavy pen, and I find the balance needs getting used to. I think that Cleo Skribents are more to my taste.Ah! The phoenix, very nice looking pen, it was on the list with the Mt. Fuji and the Red Soryu, I couldn't choose. I also like the look of the bronze Pilot falcon and have been looking at a couple of Diplomats, although I do not think I would gain anything from the latter.
Have you any experience of Diplomat pens?