Holiday buying guide: 10 tablets under $500

10 tablets that cover the price spectrumTablets have boomed in popularity in recent years, with devices that run the gamut in performance, size and price. You can pick from entertainment devices best-suited for causal browsing, basic apps and entertainment to full-fledged PCs ready to replace your notebook. You'll also quickly find they can cost anywhere from $50 to well over $1,000.But you don't have to break the bank to get yourself, or your loved ones, a new tablet this holiday season. Here a