Overview: Jon Bentley gets his hands on three of the latest soundbars, which promise to bring high-end cinematic audio to any self-respecting living room. Georgie Barrat heads into the rugged mountains of north Wales to take a ride on the world's longest zip line, while testing out a robust new drone ready to take to the skies - even in the wind and rain. The G Team jumps in at the deep end with three gadgets aimed at helping an aspiring swimmer take vital seconds off a lap time. Plus, Craig Charles tries to set up a wireless security system.