Parker Urban Fine Writing Medium Point Gel Pen, 1 Black Ink, Black Barrel Pen (35912)

I like the gel cartriges. This pen writes evenly and there is no mess. The gel doesn't leak or smudge the paper. The physical design is very attractive as many have complimented me on it. It may seem expensive, but pens like this are actually cheaper than the disposable ones. A lot of disposable pens malfunction and are thrown away before the cartridge is used up or they dry out or leak. Also, the cheap pens are the ones people tend to lose.

The manufacturer has a life-time user guarantee against malfunctions. If the pen malfunctions with normal use, you can send it back and they'll replace it for free. Just don't drop it and or let someone step on it!