Though pens may seem like a relatively simple and obvious purchase, they can make the difference between a quality result and a "satisfactory" result, and can also make a different impression that will reflect upon you. Not to mention the fact that everybody has a certain feel, style, and grip that they prefer, which helps quite a bit with writer's cramp and Carpal tunnel prevention.
There are actually two types of pen that every person should own, especially when they want to leave a professional impression. These types are a signature pen, and a working pen.
Your signature pen will be used to write - naturally - your signature, and little personal notes to family and friends. For this pen, you'll want a good quality pen with a broad or medium point. Blue is a good ink color for a signature pen, since it will stand out from any photocopies so that the original will be easy to recognize. However, if you feel that you need a signature color to go with your signature pen, feel welcome to peruse the many different ink options that are available on the market today. Virtually every color in the rainbow is available in ink.
Your working pen will be used rather heavily, even if you use a computer. This will require a good pen that has the grip and tip size that you find most comfortable. Many people find that finer pointed pens work best for taking notes as they allow for a clearer result and will fit more words to a page. These pens are also great for forms since you can clearly write in their small boxes.
Beyond these elements, you'll want to consider the following important factors for your working pen:
Price - though you will want a good quality pen, you have to take into account that you will need to buy refills for them rather frequently. Furthermore, if you're prone to losing pens, you may not want to invest in a pen that will cost you an arm and a leg.
Weight and balance - you should always test the way a pen feels in your hand. When shopping for pens, you should only shop online or from a catalog to replace one that you've already tested. The weight of your pen can make a very big difference in the way it writes when you use it.
Ink Supply - this is also very important, as you will need to replace the ink from time to time, and you will want this to be a simple process. Popping in a new cartridge is easy enough, but you won't want to carry a bottle of ink with you when you travel, even for the most expensive pen.
Grip - always test the way the pen simply feel sin your hand. Big pens are popular, but not everybody is comfortable with a large pen between their fingers. Your pen should rest along your fingers so that its point flows parallel to the paper. If it sits almost vertically with your fingertips sitting naturally near it's point, then your pen is not the right size for you.
With this all sorted out, you'll find yourself being quite proud and loyal to your pen. You'll enjoy writing much more, and find it a simpler process.