dealsdie hard booster cable - save $20 for $14.99

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just FYI~
"Copper Clad" aluminum is not solid copper as quality booster cables are.
Vinyl coated cables get hard in cold weather = inflexible, rubber insulation does not become inflexible as quality booster cables are.
175 amp clamps?? should be 300 amp and higher for this style of clamp.

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How Do You Determine What Jumper Cable Gauge You Need?

Jumper cable gauge refers to the thickness of the jumper cable's wiring. A standard set of jumper cables has a gauge rating of six. The smaller the gauge rating, the thicker the cables are. The thicker the cables are, the more effective they'll be. Nevertheless, a set of jumper cables with a gauge rating of eight should provide enough power to jump start most vehicles. For larger vehicles with larger batteries, it may be necessary to use a set of jumper cables with a gauge rating of six, or even four or two. The lower the gauge rating, the more expensive the cables tend to be.

http://www.autos.com/car-maintenance/how-do-you-determine-what-jumper-cable-gauge-you-need

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@ecriscit: Combining your answer with greengolf's-
Everything you state is true, as is the "copper is more suitable to higher amps than merely copper clad" statement.
I've had a set of 1 gauge, 20 foot long cables for almost 30 years, and have started everything from lawnmowers to bulldozers without even getting the cables warm.
Buy the best you can afford 1 time.