There are basic questions to begin asking before choosing a pair of wire crimpers for any project. Firstly, and most importantly, the type of wire or cable to be crimped will largely dictate what style of crimpers to select. Secondly, the thickness, or gauge, of the wire will determine if a heavy duty pair is needed or a light-weight pair will do the job. Any time a heavy duty pair of wire crimpers is required, it is critical to make sure that both the blade for cutting the wire and the crimping mechanism are of high quality to prevent them from becoming dull or chipping. Some tools offer a mechanism for easily changing out parts as they get chip or get dull, which is important to look for because it is always nice when they last for more than one job.
As is true with most things in life, it is important to remember that you will get what you pay for. When searching for the best pair of wire crimpers, every project is different, however typically higher cost means higher quality. Lastly, when a pair of crimpers will be needed for serveral years of use, it is usually a good idea to check if it can crimp and cut different varieties of wires. The most common types of multi-crimp tools are used to support a variety of RJ-style connectors and different types of data cables. Lastly, when a pair of crimpers will be needed for the long haul over serveral years of use, it is also a good idea to see if it can cut and crimper different types of wires.
I am the type of person who loves diy (do it yourself) projects and have years of experience with wire crimpers and various other tools. After going through many different cheap pairs of wire crimpers that quickly became dull and chiped, I finally spent money on a quality pair and haven't needed anything else. http://www.wire-crimper-reviews.com/