Issue #277 of Home Cinema Choice is on sale today – and as usual it's packed with AV goodness... This month's cover star is Panasonic's sensational £2,500 TX-55EZ952 'Pro 4K' OLED TV. Check out our in-depth review to find out why we believe that this Ultra HD display is the flatscreen that plasma loyalists have been waiting for. Joining it on the cover is Bowers & Wilkin's new dual 12in DB1D subwoofer, a best-in-class bass bin that will boost any home cinema's audio with its nuanced performance and EQ smarts. Elsewhere, Sony's innovative STR-DN1080 seven-channel AV receiver shares its surround sound secrets, while LG and Samsung battle for Ultra HD Blu-ray fans' attention with new entry-level and mid-range 4K displays. Speaking of Ultra HD Blu-ray, this month we check out two hotly-anticipated sci-fi blockbusters on the 4K disc format: Ridley Scott's Alien: Covenant and Marvel's Guardians of the Galaxy. In celebration of the former, we also take a look back at the making of Ridley Scott's original 1979 sci-fi-horror masterpiece. Also: Director Roel Reine on shooting Marvel's new Inhumans superhero show for IMAX cinemas; Everything you need to know about home cinema speaker amplification; Blackfire boss Ravi Rajapakse reveals his plan to make Wi-Fi buffering and dropout a thing of the past; Cambridge Audio shows off its premium 4K Blu-ray deck; REL double-up with its T7i 8in subwoofer; Optoma jumps aboard the 4K bandwagon with its UHD60 projector; BT takes on Sky with its revamped YouView+ set-top box; plus all of the usual news, opinion, competitions and Blu-ray/DVD reviews.