Ending today, BuyDig via Rakuten offers the TCL 43" 4K HDR Flat LED Ultra HD Roku Smart TV, model no. 43S405, for $319.99. Coupon code "SAVE20" cuts it to $259.99. (You'll need to be signed in for this to work.) With free shipping, that's a $70 drop from our May mention and the best deal we've ever seen. (It's the lowest price we could find now by $60.) Features include:

3840x2160 (2160p, 4K) native resolution

HDR with Dolby Vision

802.11ac wireless w/ built-in Roku TV (with access to Netflix, Amazon Instant Video, Hulu Plus, more)

USB & 3 HDMI inputs