I'm a big fan of the Eva tubing and the Duotight fittings. All comes together or tears apart very quickly. I ended up putting a duotight>flare fitting on the end my beer gun to make setting up a bit easier for bottling.
Eva barrier is the only draft line that doesn’t impart off flavors to my tastes. Even notice plastic off flavors from EJ Beverage ultra barrier tube, at least for the first couple weeks of running new tube. The EVA has zero taste/smell out of the box. Seems to also keep the beer in the line from going flat too.