The Fisher Space Pen is the quintessential write-anywhere ballpoint pen that most people have seen or might own. There are several other pens that utilize a pressurized cartridge to achieve the same results, and the one that I've really taken a liking to is the Uni Power Tank.
There are three things that stand out to me that make the Power Tank a greater value than the Space Pen: Price, Grip, and Writing Performance. Bold claims, right?
At $3.30, the price is obviously much lower than most Fisher Space Pens. But, the price doesn't detract from the writing quality of the pen, which is what makes it a great value. I have several of these in different places. There's one in each of our cars, a couple in random bags of mine, one at work, and probably a couple others that I've forgotten. I can buy several and not flinch.
The grip on these pens is something I especially enjoy. The grip section sports tightly grouped grooves that provide an excellent writing grip. The thickness of the section is also very agreeable. It's on the thick side of average. I've written a lot with these pens, and I've never been annoyed by the grip.
The refill is excellent as far as ballpoints go. I don't think it uses the same ink technology as the Jetstreams, but it's pretty similar. Smooth, dark, and skipless. This pen keeps up with fast writing in less-than-ideal conditions and positions. On top of that, it's a 0.7 mm point, which is what I prefer. It's the same line width as the Jetstream 0.7 mm points. Prefer something different? You can also get 0.5 and 1.0 refills, although color options in all are bare.
One of my favorite things about this pen when compared to something like the Fisher Bullet is the fact that it's retractable. Sure, it's longer than the Bullet when it's closed, but you can't beat the simple one-handed operation of a retractable pen.
This pen is a real winner for me because it significantly over-delivers on what it sets out to do. It's trustworthy, and I love it for that.
There are five colors to pick from, as well as a premium metal body that's only available in pink on JetPens. They used to carry a silver and black version, and I wish I would've gotten one when I had the chance. The body colors are extremely exciting, but there's plenty of choice. Personally, I think you can't go wrong with the Yellow or Silver bodies.