Our first deal of the week is a good one. You can get a $400 discount on the 42-inch LG C2 OLED TV, which is currently discounted to $899.99 at Best Buy — its lowest price yet. While the features of the C2 are largely identical to those found in the older C1, including a 120Hz refresh rate, Dolby Vision support, and compatibility with AMD FreeSync Premium and Nvidia G-Sync, the C2 offers faster performance and a slightly brighter panel than its predecessor. Plus, this 42-inch-sized model…