The HP TouchSmart 520-1047c ($999.99 list, at Costco) is a midrange touch-enabled all-in-one desktop PC with a 23-inch screen. It's a fast system with a huge hard drive and class-leading touch ...

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The HP TouchSmart 520-1030 ($899.99 list at Best Buy) is a midrange touch all-in-one desktop with a large 23-inch screen and a decent sub-$900 price tag. Sounds like the recipe for an excellent PC, ...

The 520-1070 has a glossy black plastic chassis, but it's more than just a monolithic 23-inch screen. Two vertical arms hold the touch screen aloft from the silvery plastic base, with a single immense ...