@hifidream
Wifi streaming is safest for your devices but may not be ideal depending on your neighbors and other factors. My experience, as someone who not only streams but also needs a reliable network connection for work is that Ethernet is still the king of reliability. If my PC or TV stop being able to stream I know it’s not my wifi.
The use of a free wifi analyzer for your phone or tablet can always help you decide on the ideal configuration, not just in terms of signal strength but also picking out the least congested channels in your neighborhood as well as helping you decide where to put your router.
Also, even if you opt for 100% wifi inside your home put your modem/router on a surge protector to reduce the chance of an incoming surge hitting your power lines and causing secondary damage through that path.