A:AnswerI've found it to be very intuitive. There are some apps that are not fully integrated yet (Netflix doesn't have a voice command option yet) but most things can be easily commanded through voice.
A:AnswerYou would have to ask a Best Buy team member, or look at the date of the Weekly Ad. The sales change constantly, so you won't get a good answer on here.
A:AnswerThe 7 or 8 series with HDR will for sure have better blacks. This tv does ok. Black is definitely better than 1080p but it's not HDR or OLED black.