I've been helping a relative plan a small rear extension, and we're struggling to decide between aluminium bifold doors and traditional sliding glass doors. Bifolds seem great because they can open up almost the entire wall, but sliding doors might be more practical when furniture is close to the entrance. We recently visited a showroom to compare the two, and both looked surprisingly good in person. For anyone who's installed either option, which would you choose for a modern garden-facing living room, and why?