The SanDisk Extreme SSD is more reliable and durable than a hard disk drive and is backed by SanDisk's reputation for quality.

ENGADGET: SanDisk launches Extreme SSDs: $190 for 120GB, $400 for 240GB

Although the current batteries are "durable and reliable, " Hartline said lithium ion batteries pack more energy into a smaller space.

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Spark EV's long-life battery is designed to be safe, durable and reliable, and is warranted for eight years or 100, 000 miles.

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Do their shoppers come looking for hotter deals on a product, a brand, or most anything else in that store, etc.? Or do they come expecting sustained high quality, good service, products that are durable and reliable, and for which they are willing to pay a bit more.

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The drive is also more durable and power efficient, delivering a reliable computing experience while maximizing battery life.

ENGADGET: SanDisk launches Extreme SSDs: $190 for 120GB, $400 for 240GB