At one time, I really liked felt-tip pens, but these days I'm liking the liquid gel pens. About an 0.7mm ball.

I still adore fountain pens, but...I don't use a pen enough, these days, to warrant the expense? The Pilot Varsity fountain pens used to be awesome, though, for a cheap fountain pen. No idea whether they're still made or not.

I always figured that, when I had a decent career, I'd buy a really good fountain pen. I was a professional writer for a few years. Never did buy one. Never have owned one. Go figure....