When buying a cable you want to determine the best length for your situation. Too long, and you wind up tripping over excess cable and if too short then it cannot reach your amp. Most guitar cables are available with either right angle plugs or straight plugs. If you have an electric guitar with the input jack on the outside part of the body then you may want to choose a cable with at least one right angle plug. This will keep the cable end more flush with the body of the guitar and cut down on the accidental impact that is more common when using a straight plug on these types of guitar.
A good guitar cable lasts many years. The truth is that guitar cables take lot of abuse they are constantly stepped on and twisted in strange ways, which frays the connections and seriously affecting the quality of the signal that your guitar sends to your amp. Instead of throwing it away, fix the connections between the cable wire and jack. It is a very simple repair that will save you time and money. You can unscrew the metal caps on both end of the guitar cable. Inspect the connections for frayed and loose wires. If the guitar cable has a short, locate the short by strumming your guitar with one hand and then manipulate the cable until it produces sound. Cut off the piece of the cable that has the short in it and trim frayed wires with a wire cutter. Use a wire stripper to remove enough insulation and reattach the ends of the cable to the jack. After that you can heat up a soldering iron and solder all the wires to the input jack. Connect the metal cable strand to the short prong or inner jack, and connect the braided wire to the claw or outer jack. Once you have done one side, you can do the other end of the guitar cable. Now you can screw the metal caps back on.
There are also low noise guitar cables are available. Low noise guitar cables have low noise functional characteristics and full frequency transfer between amplifier and guitar. This is especially important when used with acoustic guitars, where piezoelectric vibration pickups propagate overtones and string incidentals in minute detail, and in live professional venues, where noisy cables can damage your musical equipment as well as eardrums. One can prevent plug contact corrosion by using gold-plated plugs. On the other hand prevent cable corrosion by covering the plug-cable interface with heat-shrink tubing. Also one can prevent micro phonic pop and mechanical damage with very low capacitance cable dielectric and superior cable sleeve.
A guitar cable, just like any piece of musical equipment, comes in a wide range of qualities spanning from superlative, to plain awful. Even if your budget is a little bit tight, you definitely want to stay away from the cheap low end cables as they won't even be worth the little you pay for them.