Despite all the nifty pens devised since the first green Pentel rollerball thirty-odd years ago, there's nothing quite like a proper fountain pen. Of course it's a much bigger investment - you could buy tens of rollerballs for the same money. But you can't refill most of those rollerballs - so the question to ask is how much a rollerball can write, and how this compares to a bottle of ink, which costs about the same as three or four rollerballs. My guess is that the fountain pen and ink will thrash the rollerballs in the long run. Maybe not very relevant in an era when you type rather than write, but when you write you may as well do so with a bit of style.
The style of the pen is very plain - Matt black for the cap and barrel, shiny black for the grip, and a standard medium nib. But that's fine with me - I've had many fountain pens, and black was always the best colour. The nib writes smoothly and the grip is not as slippery as it looks. The clip seems very sturdy, and the cap goes on with a convincing sounding click - it's not going to fall off.
It's happiest on good quality paper as found in a Moleskine notebook, but is fine on photocopier paper and can be used for the crossword or Sudoku in your newspaper if you want.
Unless you're really clumsy, get the converter
and bottled ink
rather than cartridges - my guess is that bottled ink is about a third of the price by volume, so the converter soon pays for itself. Refilling from a bottle is where the smooth grip pays off - the ink just falls off it and you barely need blotting paper to avoid inky fingers.