I needed a new cheap fountain pen to write with - I always write with fountain pens, it helps my handwriting. Ballpoint pens tend to run away and scrawl when I use them. I don't like writing with my sketching pens, they aren't designed to move that quickly.
I wanted a pen that uses standard cartridges - normally I like writing with LAMY pens, but the cartridges are expensive, and although converters are available I don't want to carry a pot of ink around to refill it.
I had to climb up a ladder at the stationer's to get to this one, they put it out of reach, probably because it's so very cheap. Anyway, it's surprisingly nice to use: it's got a chunky grip, so it would be good for school children to use and it won't give you writing cramp as quickly as a slim pen.
It's got a very pleasing mechanism that grabs the cartridge and clicks it into place, so no accidental messy unscrewing.
You can write quickly with it, it's not the smoothest but it doesn't scratch - a good everyday writing pen.