I'd hate to beat a dead horse, but I use CCA jumper cables all of the time and they work just fine. For the average consumer without a huge F350 or Hummer, a small awg cca jumper cable is perfectly fine. There is no point in spending the extra money for pure "OFC" cables("OFC" is a marketing gimmick anyway). I remember when the Motor Trend CCA cables were listed here a month or so ago and one guy threw a hissy-fit, which of course is contagious and other arm-chair experts started to weigh in. I even heard the "skin effect" brought up, as if the skin effect is irrelevant. That is not true, is especially with the relatively high current of today's automotive batteries. The skin effect does indeed come into play, though admittedly on a minor scale -yet it is still valid. For those that don't know, the "dumbed" down explanation of the skin effect is the tendency of electrons to flow on the outside "skin" of the conductor -hence the copper plating. I'm not saying that pure copper cables aren't better than CCA, but I am saying that for the vast majority of consumers who drive average sized vehicles, CCA cables are much more practical -considering the higher cost and minimal benefit of pure copper. So, if you don't drive a Hummer, your best bet would be to go with 4 or 6 awg CCA cables. You won't notice any benefits from the higher prices all copper cables. Unless you drive a small compact car, I wouldn't go with any gauge higher than 6 -and of course, the longer the cables, the smaller the gauge you should get. However, CCA cables are just fine for 99% of the population. With that being said the going price for 4 awg copper cable with an extremely high strand count and ultra flexible jacket (cable guaranteed to be far superior in every way to the cabling in these products), is about $2 per foot (from your neighborhood store) and two pairs of alligator clips will run you about $5. You do the math to decide whether these are a good deal or not based on material composition and quality. If you are really that foolishly concerned about getting only the best jumper cables, it would take less than 10 minutes to make your own out of superior materials for a cheaper cost. Otherwise, go with CCA cables because you likely would never be able to tell the difference.