At 43", this TCL 1080p TV is probably smaller than you’d want for your living room home theater, but it could be an awesome bedroom TV, and $170 is the best price Amazon has ever offered.
Just note that this is a Gold Box, so these prices will only stick around for a day, or until sold out. So if you need a secondary or tertiary unit with built-in Roku powers, this is the right time to buy.